... 电弧熔化用的金属粉末 arc melting metal powder 纯金属粉末 pure metal powder 单金属粉末 one-metal powders ...
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Pure Grey Metal Powder 纯灰色金属粉末
Appearance: pure grey metal powder.
外观：纯灰色金属粉末。
Cobalt can be converted into complex ion by excess ammonia and then recovered as highly pure metal cobalt powder by replacing with zinc powder.
所得少量浓缩液去掉铁等杂质之后，加过量氨使钴形成络合物，再用锌粉置换出金属钴粉。
Gray powder metal, pure, without any visible inclusions and oxidation color.
灰色粉末状金属，纯净、无肉眼可见夹杂物及氧化色。
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