... washed graphite 精制石墨; 精制石墨 zinc dust purification 锌粉精制 zone purification 纯化区; 区域精炼; 区域精制; 区域提纯; 逐区提纯 ...
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zinc dust purification
锌粉净化
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Purification is mainly done by adding zinc dust to the solution. As all the elements to be removed lie below zinc in the electrochemical series they can be precipitated by cementation.
净化过程主要是加入锌粉到溶液，这样所有电位序在锌之后的元素都被置换出来并且凝固沉淀下来。
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