According to the chemical composition, water reducing agent is usually divided into lignosulfonate type of water reducing agent, naphthalene series of high-efficient water reducing agent, melamine series of high-efficient water reducing agent, amino…
The impermeability of concrete is related to its porosity and pore structure.…
Hafnium-nitride, a grayish powder with cubic crystal structures, is available in a variety of sizes. The melting point is 3310. Microhardness 16GPa. It's fairly stable but easy to corrode by concentrated sulfuric and hydrofluoric acids. Purity: 99%…
Apple will use the iPhone to control the car climate,seats and radio Apple Inc. is looking to expand into cars. Millions ofmotorists use Apple CarPlay interface to control music, navigation and phonecalls. The company is working on a technology that…