Is boron amorphous or crystalline?Boron can be prepared in several crystalline and amorphous forms. The well-known forms of crystallization are α-rhombohedral (α-R), β-rhombohedral (β-R) and β-tetragonal (β-T). In spec…
Russia's insistence on paying for Russian gas in rubles has rattled European countries: Greece held an emergency meeting of suppliers, the Dutch government would urge consumers to use less gas, and the French energy regulator told consumers not to pa…
British car service company RAC said , t he average price of petrol in the UK has risen to 1.51 pounds (about 12.76 yuan) per liter, and diesel has risen to 1.55 pounds (about 13.09 yuan) per liter . The company official said that since last Thursday…
Inflation data in many countries continues to rise, bringing new impacts and changes to the global economy and financial markets. Under this circumstance, the size of the global negative interest rate bond market, which was previously infinite, has a…
At the first quarter information conference held by the China Iron and Steel Association on the 27th, Qu Xiuli, vice president and secretary-general of the China Iron and Steel Association, said that since this year, my country’s iron and steel indus…
Cement foaming machine needs auxiliary test machine to help achieve better foaming effect in construction application. Cement foaming agent is a chemical admixture, which is added to cement. Compensate for shrinkage and tension of steel bars to produ…
Spherical metal powder is the core material of metal 3D printing and the most important link in the 3D printing industry chain, which is closely related to the development of 3D printing technology.…
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