Nanotechnology refers to the science and technology that create single-atom and single-molecule substances. It studies the properties, and uses of materials with a structure size ranging between 1 and 100 nanometers. The process of studying the compo…
The tungsten boat is a type of tungsten vessel that looks like a boat. It can also be called the tungsten water boat, tungsten evaporation boats or coated tungsten boats. By high-temperature stamping, tungsten boat is made out of high-purity high-tem…
In terms of the adaptability of cement and concrete superplasticizer, the type and quality of concrete superplasticizer also play an important role. Therefore, concrete superplasticizers should be selected according to the adaptability to cement and…
Gazprom recently said it had completely suspended gas supplies to Bulgarian Gas company and Polish Oil and Gas Company (PGNiG) because it was not being paid in rubles. Russia said it would resume gas supplies after it agreed to pay for them in ruble…
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