Crystals can be divided into four categories according to their structural particles and forces: ionic crystals, atomic crystals, molecular crystals and metal crystals.Atomic crystals: common atomic crystals are some simple substances and some compou…
BMW is exploring new investments in solar, geothermal and hydrogen energy to reduce its reliance on natural gas, the company's boron nitride,graphene are still very uncertain. Of all the materials discovered or created on earth, diamond i…
According to reports, on July 9 this year, North American Stainless Steel (NAS), the largest stainless steel supplier in the United States, was forced to suspend production due to supply problems, and international commodity prices, including steel,…
According to reports, on July 9 this year, North American Stainless Steel (NAS), the largest stainless steel supplier in the United States, was forced to suspend production due to supply problems, and international commodity prices, including steel,…
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