Science and technology in the development, is a majestic force pushing us forward; science and technology in the development of a burst of spring wind blowing out a better future; science and technology in the development of the sweat of the working people in watering the beautiful fertile soil, ah, science and technology in the development of the motherland's future is moving towards the bright!
The annual spring tour came again, we all with good expectations on the car, the scene in the car can be called a spring breeze ah! The scenery outside the window is also unique, everywhere overflowing with warmth. The highway flew past a car full of smiles.
Radar Academy, militarized management. As soon as I entered the college, a thunderous cry came into my ears: "One. Two. Three. Four. One. Two. Three. Four." How neat, how steel. Another look, a team as one team, hands in the dance, feet in the foot, military posture is how dashing `, sharp, without a trace of tiredness
In their room, but also militarized management. Look at the quilt, piece by piece, like tofu, angular. I don't know what kind of magic they used to make the "soft" quilts become "hard" terraces."
The most solemn flag-raising ceremony is about to take place. The most solemn flag-raising ceremony is about to begin, only to see the uncles wearing blue uniforms, holding the red flag, with a steady square step, toward the podium, when the bright five-star red flag slowly raised, all eyes are cohesive, everyone's face shows a look of excitement.
More let us marvel at that will have to count the precision of the radar. You see that a rack of straight radar, erected in front of us. Radar above the metal tube woven into a magic "net." It can radiate battery waves, and the speed of propagation is the speed of light C. In the 1930s, there was a major breakthrough in radio technology, and radar was invented. Today, no matter day and night can detect long-distance radar is showing in front of our eyes, my heart can not help but produce a feeling of admiration, how amazing invention, this may be the inevitable results of the development of science and technology!
Today, although we are tired a little bit, but we have realized that today's society in the rapid progress of the reason is inseparable from the development of science and technology, but also more added to the military aspects of our strong interest. The development of science and technology, our generation's shoulders heavier!
They delete points.
2. Technology changes life this essayIf you are writing about technology to change life essay, you must focus on the impact of science and technology on life, so you must write about the importance of scientific and technological reforms, and then write about what kind of way science and technology is to change life.
Technology changes life, this is a very big topic, to write this essay, you must focus on describing the achievements of various aspects of technology, if necessary, you can refer to some knowledge of science and technology, and then through the life affected by technology to expand to write, so that the essay can become more holistic. Writing such a science and technology essay must y reflect the characteristics of science and technology, and if necessary, the development of science and technology in detail, through the development of science and technology to show how life has changed, which is an important writing know-how.
If there is no limit to the type, then it is best to write an argumentative essay, technology is the focus, but can not just describe the technology, it must be written to show how it has changed life, otherwise it will be a runaway situation, so this essay should be written in the beginning of the core point of technology to change life.
3. Composition: Technology to bring changes around more than 400 wordsTechnology changes life 1. When it comes to cars, you must be very familiar with you will think of JPS, you will think of speed, but the more advanced car has appeared, but this is a fantasy, this kind of car can be in slow motion or stand up when stationary, to solve the shortcomings of the large floor space, and truly intelligent, it is very fast to find the front of the stationary pedestrians or vehicles quickly, but also to find that the car is not a car, but the car is not a car. It can quickly detect pedestrians or vehicles in front of it and quickly vibrate the steering wheel or handle so that the driver can react quickly, thus avoiding many accidents 2. in terms of electronic products, there has also been a great progress the first computer used electronic components electronic tubes, one is the size of a thumb, the whole computer consists of more than 20,000 electronic tubes, a computer is as tall as a building, but nowadays, some computers can be carried in the pocket, thus facilitating people's lives 3. Thus facilitating people's lives 3. as the saying goes, the small is the big look at the current toys can be expected to the future trend of a foreign exhibition introduced a remote-controlled car it can not only be exercised on the vertical wall, but also like a gecko geckos sucked in the ceiling exercise I guess there will be such a car in the future to apply to our lives
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The first; "science", what a marvelous thing, it makes many scientists are willing to give their life's work for it. Many people think that science is far away from us, in fact, science is around you and me. When the holidays came, I had more time to myself, so I became interested in science experiments. I did the egg "shrinking" experiment. I first boiled the egg, peeled it, then poured half a bottle of boiling water into an empty glass bottle, then placed the egg in the mouth of the bottle, I stared wide-eyed and watched carefully, and found that the egg was shrinking, shrinking, slowly falling, and finally, fell into the bottle at once. Although, the book said that the egg will definitely fall into the bottle, but, I was still dazzled by the scene in front of me, a sense of pride! "The test was successful!" I couldn't help but shout. How was the egg able to shrink and fall into the bottle? I opened my book with a question. It turned out that as the water temperature dropped, the space occupied by the water inside the bottle became smaller, so the air inside the bottle then occupied a larger space, so that the air around the bottle would squeeze the egg, forcing it to slide into the bottle. Oh, let the egg fell into the bottle is not "shrinkage", but, the work of atmospheric pressure ah! Next, I did the "water pressure bubble" experiment. I first poured some laundry detergent into a bowl, stirring, pouring water in another bowl, a toilet paper roll end dipped in a little laundry detergent water, and then put the other end into the water, then, a colorful bubbles appeared. I repeatedly do this experiment, I think it is really interesting, do not need to blow mouth, as long as the toilet paper roll end dipped in laundry detergent water, the other end into the water, colorful water bubbles will immediately appear. I excitedly called my mom and dad to enjoy, my mom and dad also feel magical, asked me how this experiment contains the scientific reasoning, I still find the answer from the book: when we slowly dip the reel into the water, the atmospheric pressure to push the bowl of water into the reel, the air inside the cylinder is squeezed and gradually rise, which in turn pushes the laundry detergent film drum up. Since the film has surface tension, it won't break when it bulges. So that's how it works! I've learned another science lesson. Dad wanted to move two large pieces of glass and wanted me to work with him, but he was afraid of breaking the glass. What should I do? Dad put a few drops of water on one piece of glass, and then we carefully covered the other glass with it, and the two pieces of glass actually stuck together. We easily moved the two large pieces of glass to a safe place. I was a little confused: how could a few drops of water make two pieces of glass stick together? The book "Science" helped me to understand the mystery: glass sticks together because of the adhesion between the glass molecules and the water molecules. Adhesion is a powerful force of attraction that exists between different substances and molecules, and under the action of this force, the two pieces of glass are firmly stuck together and difficult to separate. It seems that science is in our lives, as long as we observe carefully, think carefully, combined with books, contact with reality, we can find the scientific principles, so that science serves our lives, improve our quality of life. Secondly, we are all familiar with the word "science and technology". Simply put, science and technology is science and technology. From a broad perspective, it refers to the sum of natural science and technology and social science and technology. Since the reform and opening up, with the passage of time, science and technology are developing rapidly in the motherland like bamboo shoots after rain. Looking around life, science and technology is everywhere, science and technology is around me! Walking on the road at night, there are electric lights to give us lighting; to give a friend a phone call, can pull out a cell phone; back home, turn on the TV to see the news, turn on the computer, you can chat with your friends; mom with a rice cooker steamed rice; open the electric heater; the family sat around together, enjoying the mom with an electric frying pan modulation out of the delicious food you see, at any time, any place, we can leave the science and technology? There are many uses for technology! For example: if there is no electric car, we will be inconvenient and distant friends and relatives to interact; if there is no rolling stock, people travel to various places it is difficult to realize the night and day; if there is no space shuttle, people into space will be an empty word; if there is no icebreaker, we will be very difficult to the Antarctic expedition; if there is no spacecraft, the people to the moon will be only a fantasy on the contrary, with science and technology, our lives will become Better - with a fax, our documents, instantly can easily pass out! With robots, it can be located in the space people can not reach; the use of lasers, can be made into fitness equipment; with air conditioning, even if it is hot summer, can make people comfortable as spring is not difficult to see: all of this, people enjoy the fruits of science and technology! It can be seen: science and technology, to help us create a superior living environment; science and technology, to improve the quality of our lives; science and technology, is the crystallization of the wisdom of people around the world! We are in science and technology, we must continue to learn new technology! Technology is all around us, we also want to vigorously develop science and technology.
5. to science and technology to write a 400-word essay, thank youThe annual cycle of the tree
Science is really no wonder, even a wheel has a university question.
The annual rings of a tree record the age of the tree. Each wheel varies in thickness from one year to the next. Even the rate of growth of the tree during the year is traced in the annual rings. Bright lines indicate rapid and vigorous growth during the rainy spring, and dark lines indicate slow growth during the summer. Scientists use the annual rings of coppiced trees as weather maps of past eras. Wide annual rings tell of favorable growing conditions - plenty of sunlight and water. Narrow rings mark a dry year. A narrow annual ring in the center can indicate that other trees are shading it, taking away sunlight or moisture. A leaning tree may be pushed out by competing roots and unable to grow upright, but it grows more wood on the other side to prevent tipping. This is also indicated in the width of the annual rings. If the tree is damaged in a forest fire one year, the annual rings will show how its subsequent growth has bypassed this injury.
The U.S. Daily News has commented: "Sagan is a scientist with three eyes zhidao. One eye explores the stars, one eye explores history, and the third eye, his mind, explores the reality of society ....... "Sincerely, the progress of human civilization needs more scientists with three eyes like Sagan!
6. Essay: Technology Changes Life (500 words) Three Essays[1]Technology Changes Life Nowadays, technology is becoming more and more developed, and people are gradually entering the information age. Now let me introduce one of the iconic items of the "information age" - the cell phone. The appearance of the cell phone is small and exquisite, very lightweight. It can send messages, take pictures, check calendars, surf the Internet, and record videos ...... The most important and commonly used function is to send messages and make calls quickly. In ancient times, it took days or longer for people to meet and deliver a message. And to write a letter, you are in the east city, I am in the west city, from the east city to send a letter to me, sometimes it takes ten days and a half months or even a few months of time. What a long wait! But life has changed since I got a cell phone. If there's an emergency, there's no need to rush, just send a message, and the other party will receive it in just a few seconds. If you want to meet somewhere, you just need to make a phone call. How fast it is! It saves us a lot of time. Of course, cell phones don't represent all the technology. Nowadays, the Internet, artificial communication satellites and so on have made human life more comfortable and convenient. In short, technology has changed our lives a lot. [2] Technology has changed my life With the global development of science and technology, our lives have become richer and richer. Subways, high-speed railways, airplanes, telephones, cell phones, automatic elevators and so on. These technological developments have changed our lives. Magnetic levitation train is not close to the rail traveling, but in the form of levitation, traveling on the rail surface. Originally, it uses the electromagnetic induction of the principle of attraction and repulsion, so that the train body floats up, and then by solar energy, wind or water and other power to promote the train forward. This train will not have noise, safe and smooth, will not pollute the ecological environment. Japan's maglev train, is the use of electromagnets and coils of induction of the magnetic force, so that the body levitation. The Maglev train in Birmingham, England, utilizes the magnetic force between the electromagnet and the track to levitate the train. Cement mixer trucks are used to transport mud, and construction sites use dispersed lumps of mud. To keep the mud from clumping together, it is rolled as it goes. There is a large moving vehicle that is also round, and it is used to transport liquids. The round shape of the liquid tanker has certain reasons, first of all, with the same surface of the material, to the round enclosure of the largest volume; and then there is no edge of the round, not easy to break. Round tanks also bear pressure more evenly. Satellites are high-tech communication structures, and every few years the world must launch a satellite. A satellite consists of a body, a transponder and receiving and transmitting antenna, a solar power system, an attitude control system and an orbit control system. We see television programs thousands of miles away from the satellite transmitting antenna to the reception of the various regions of the war, will also be provided with a number of auxiliary devices. In this way, we can see TV programs thousands of miles away. High-rise buildings are often found in cities because of the high cost of land, so high-rise buildings have to be used. There are many different types of high-rise buildings, including square, round, and prismatic. Commonly, there is a zigzag building, like a rectangular building blocks, wind resistance is poor. Cylindrical building wind resistance is better, the use of cylindrical famous buildings are the United States, Atlanta, Peachtree Center Plaza Hotel, which is the world's highest conical hotel. Cone-shaped buildings have the best wind resistance, and the ability to resist earthquakes is more powerful. Science and technology are changing our lives, technology is leading us into a new society. As long as we love science, study science and observe science, we can create a perfect realm! [3] Technology Changes Life Times are changing and science is progressing. Technology is becoming more and more developed, computers are slowly stepping into our lives, the network has now become an essential tool in life, such as chatting, surfing the Internet, learning ... However, the emergence of computers has brought changes to people's lives. Few elementary school students go online to study, most of them play games and chat. Such examples are common. It is the advent of computers that has brought about all these examples. Technology has changed our lives. Although technology makes our lives more comfortable, but the deterioration of the environment they do not see, the air more and more turbid, people can no longer breathe fresh air, winter snow rarely, do not you know? Technology has not only changed our lives, but also animals. The turbidity of the air makes it impossible for animals to survive, and the harshness of the environment puts most animals on the brink of extinction. Technology changes life, I hope that technology can one day really "change life".
7. Four hundred words on the development of science and technologyThe land under our feet is changing all the time, all because of science and technology!
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A thousand years ago, people lived a simple, hard life. At that time. People didn't know what the spiritual world was, they just wanted peace and quiet, enough to eat and drink, to maintain a normal life, for which people burned incense and prayed for peace. Horse-drawn carriages were supposed to be the only means of transportation, but they were so expensive that the people had to choose to go on foot. It was a long way from Shanghai to Beijing, and if you had pneumonia, there was no cure, so people had a very short life expectancy.
Now, someone invented the cell phone, relieve the people in different places of the sadness of love; someone invented the plane, to get rid of the people out of the people's long journey; someone invented anesthetics, to avoid being tortured by the disease of people and a layer of pain. It is science and technology to make our planet smaller, more school now we are no longer satisfied with the material enjoyment, more is the spiritual comfort. The burning of incense and worship of Buddha still exists, does not exist is the concept of people stupid just.
The development of medical technology, almost all common diseases in life can be cured, was to extend the life of the people, have more time to expand life, enjoy life. The rapid development of biology, chemistry and other natural disciplines has brought colorful spiritual food to people with strong curiosity. Humans in the exploration and invention at the same time to the self-worth of the affirmation, people in the enjoyment of science and technology to bring well-being at the same time also harvested the joy.
At one time, people were amazed by the stars in the sky; today, we are able to send satellites into space.
At one time, people pondered how to gain a foothold in this world of the weak and the strong; today, we ponder how to survive in this world of open warfare.
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Technology has transformed society, and we need to recognize the power of technology to make our lives better!
8. 400 words about the development of science and technology essay urgently1. The development of atomic physics theory is the human mastery of nuclear energy technology, but also brought the Hiroshima and Nagasaki nuclear disaster, brought the human fifty years of "horrible peace", the human beings for the first time with their own destruction of their own ability.
There have also been numerous nuclear accidents, most notably the Chernobyl disaster in the Soviet Union (please search the internet for specific data), and the development of chemistry has given us the ability to transform nature like never before, but our gunpowder and explosives have harmed tens of millions of our fellow human beings. Our chemical synthesis technology is that we have created something that does not exist in nature, but now we are also plagued by white trash, poisoned by chemical pollution, why our country now has so many children suffering from leukemia, a very important factor is the use of chemical binders in home renovation, as well as the destruction of the ozone layer of Freon.
The development of oil exploration technology is the pace of human progress greatly accelerated we have been able to more than the speed of sound speed flight, but this also brought too many wars too much trouble, but also make the earth began to cold fever. The development of biotechnology has given us the power to create life, which was previously monopolized by God, but it has also brought about ethical disorders.
In short, scientific progress has always been accompanied by the danger of corresponding drawbacks, and today we must face up to these negative impacts, or else we may end up destroying the human race at our own hands. 2.
But as we all know, technology has also had an impact on human health. Cell phone radiation has caused many people to suffer from diseases as a result.
Industrial wastewater pollution of the original clear rivers, so that the original to these rivers rely on the survival of the animals drink the water after the disease or even death ...... This is not the development of science and technology brought about by the shortcomings of it?3. Oh, it seems that the defense of the positive side is not well-informed. Although the air conditioner is warm in winter and cool in summer, it has serious problems of its own.
The emergence of air conditioning makes it possible to keep us in a comfortable environment all year round, and it is because of this that human beings' perception of the natural temperature is getting weaker and weaker, and therefore human beings can't adapt to the changes in the natural climate. And air-conditioning gas is the culprit of the destruction of the ozone layer! 4, but the exhaust from the car is also a very serious practical problem, polluting the air, but also pollute the environment, you do not want to stay in a place of pandemonium all day long? Also, white pollution is a problem, because plastic is not suitable for dissolution, thrown in the land, it will pollute that piece of land, and will be eaten by small animals.
This situation is very worrying! .......