cobalt minerals 中文意思是什麼
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The only vitamin to contain all the common minerals, vitamin b12 comes in many forms, such as b12a, b12b, and b12c. it usually consists of a cobalt molecule bound to a cn group and an oh or no2 group
它有很多種型式，如b12a b12b b12c等，最常見的化學鍵是在鈷分子上接氰根- ch ，另外還有氫氧基- oh或硝基- no2等結合型式。 -
Suppliers of alloys, metals, minerals and chemicals. the company also take back spent materials, in order to reclaim the metal contents, such as nickel, cobalt, vanadium
-特大型鋼鐵聯合企業，擁有我國最先進的熱軋大h型鋼生產線和我國最大的車輪輪箍專業生產廠。
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