TheChina Academy of Information and Communications Technology under the Ministryof Industry and Information Technology of China released a report on the 23rd,stating that the shipment volume of mainland mobile phones reached 33.575million units in Oc…
Description ofConcrete strength and shrinkage reducer1. After the carbonate cement is added to the c...…
The aquarium is a place for aquatic life display and popular science education, as well as a place for aquatic life resource protection and scientific research. Aquariums can specialize in marine life, freshwater life, or both; there are public aquar…
Copper-iron can be refined by adding a little bit of rare earth. Both copper and iron have a melting temperature around 1200 degrees. They are perfectly compatible. About Several metals are combinations of different kinds of materials. The reason f…