A molybdenum rod with high melting points, high thermal conductivity, and low thermal expansion can be used in the production of high-temperature heating elements, electric vacuum systems, light source components, and electric vacuum pumps. The Met…
A molybdenum rod with high melting points, high thermal conductivity, and low thermal expansion can be used in the production of high-temperature heating elements, electric vacuum systems, light source parts and electric vacuum pumps. Metal alloy C…
Sodium hexametaphosphate (NaPO3) is an organic substance that has molecular formula 6.Sodium Hexametaphosphate, a white powder crystal, is a transparent colorless sheet of glass or block solid. Insoluble in water; soluble in most organic solvents.…
Copper is the earliest discovered chemical element. Its chemical symbol is Cu, atomic number is 29, and atomic weight is 63.546 U.…
More than 300 public aquariums worldwide, and more than 100 have opened since 1990. According to incomplete statistics, aquariums (including those in zoos) attract up to 450 million visitors yearly, with far-reaching economic and educational implicat…