中国发现的钴矿含锰量高，因此呈现出较弱的蓝灰色。
Cobalt ores found in China have a high manganese content, which produces a more muted blue-gray color.
结论：靶肌肉注射甲钴胺可促进周围神经的再生，高剂量的甲钴胺可以更好地发挥其对损伤神经的营养作用。
CONCLUSION: Target muscular injection of methyl cobalamin can promote the regeneration of peripheral nerve, and methyl cobalamin of high dosage can better play its role in nourishing injured nerve.
以某厂含钴水相为研究对象，在实验室开展了高纯氧化钴或草酸钴的制备试验。
Studying on some plant cobalt aqueous phase, it carried out high-purity cobalt oxide or cobalt oxalate preparation tests in the laboratory.
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