The original meaning is broken, rusty and useless copper and iron, and it refers to all kinds of broken and useless artifacts in general.
Expansion:
The pinyin for copper is óng, and its stroke order is: horizontal folding and skimming, vertical, skimming, and dotting.
Detailed Explanation:
Copper is a metallic element with the chemical symbol Cu and atomic number 29.Copper has good electrical and thermal conductivity, and is widely used in the fields of electrical engineering, electronics, construction, and manufacturing. It is one of the more common metals in the earth's crust and exists in nature in the form of ores such as chalcopyrite and sphalerite.
Copper also has good plasticity and corrosion resistance, can be made into a variety of shapes and uses of products, such as wires, pipes, appliances, parts and so on. In addition, copper also has antibacterial properties, in the medical and dietary appliances are used.
Copper has an important position in human history, and is widely used in the production of bronzes, such as bronze swords, bronze tripods, etc. These bronzes not only have practical functions, but also carry a rich cultural heritage. At present, copper is still one of the important industrial materials in the world, which has an important impact on the development of economy and society.
Copper is a high density metallic element with good electrical and thermal conductivity. It has a low melting point of approximately 1083°C, making copper easy to melt and process and widely used in a variety of manufacturing processes. In addition, copper has excellent plasticity and ductility, and can be cold rolled, stretched, and extruded into a variety of shapes.
Copper's conductivity is excellent among metals, second only to silver, making it widely used in electrical and electronic fields. Wires, cables, circuit boards and other electronic components often use copper as a conductive material, because of its low resistance and good conductive properties can effectively transmit the current, and reduce energy loss.
In addition, copper is also one of the metals with better thermal conductivity, and is widely used in heat exchangers, radiators, and other thermal management equipment. Copper's high thermal conductivity allows heat to be transferred quickly, ensuring stable operation of the equipment.
Copper also has corrosion resistance and antimicrobial properties. The surface of the copper will generate a layer of dense oxide film, the external environment has a certain barrier effect, thus reducing the possibility of corrosion of copper materials. In addition, copper ions have a certain antibacterial effect, so in medical equipment, water treatment, food processing and other fields are widely used.
In short, copper as an important metal material, has a variety of excellent physical and chemical properties, widely used in various fields. It plays an important role in the development of human society and is also an important support for industrial and technological progress.