(a) different uses: bookshelves in general is a library to store books, dense shelves are generally put on the file, so it is also known as the archive shelf, and according to the use of the different, there are cases of shelves, painting shelves, antique shelves and so on.
(2) placed in different ways: bookshelves are generally fixed, according to a few rows of installed, basically do not move is not going to move, every two bookshelves to leave a meter or so between the aisle; intensive shelves are equipped with a track at the bottom of the general indoor space as long as the aisle to stay, need to take the archives of which columns, as long as the shake of the intensive shelves to stay out of that column of the space, can be extracted, usually all the intensive shelves are Closed type, the whole type is listed in the room.
(3) with different materials: all steel bookshelves and intensive shelves with materials are high-quality cold-rolled sheet, but the bookshelves can also be beautified with wooden sheaths, as well as pure wooden bookshelves.
(D) different space utilization: bookshelves because of its inability to move the characteristics of the middle of each two columns to leave the aisle, so the space utilization is relatively low, generally is the utilization rate of the room is about 45%, while the intensive shelves as long as the two sides of an aisle, the utilization of indoor space is greatly improved, basically can be used to the room 70% of the space.
(E) sealing and openness of the difference: bookshelves are placed in the library to display books, in order to facilitate all the books can be better displayed in front of the readers, so the bookshelves of each book should be left on the face of the readers to choose the space, so the bookshelves have the characteristics of the openness; and dense shelves are generally in order to save the space for storage, but also for storage of the archives used, so dense shelves are not normally used, is all closed up, has the characteristics of a dense shelves. When it is all closed up, with the function of locking, there is a strong hidden function.