Density is a measure of how tightly the mass of an object is packed into the space it takes up. It can be calculated by dividing mass by volume. The density of aluminium is 2.7 g/cm 3 – this ...

Mass production facilitates the efficient production of a large number of similar products. It uses mechanization to achieve high volume, detailed organization of material flow, careful control of ...

State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, PR China State Key Laboratory of New ...