The power consumption of the quantum chip is very low during use, and it can be driven almost without much current, which ushered in a major breakthrough in research and development.…
Boron nitride is a crystal of nitrogen and boron atoms. The chemical composition is 43.6% boron and 56.4% nitrogen, with four different variants: hexagonal boron nitride (HBN), rhomboidal boron nitride (RBN), cubic boron nitride (CBN) and w…
Oral: Zinc is safe in doses of up to 40 mg daily. Large doses may be safe, especially for short periods. But taking more than 40 milligrams a day may reduce the body's absorption of copper. The amount required was different at different ages. 1~3 yea...…
Water reducer is a special chemical product added to the concrete mixture before pouring, belonging to a kind of concrete admixture.…
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