保持金粉过量投料，控制氰化亚金钾溶液的浓缩水量是得到高纯度和高收率产品的关键。

The reduced gold powder was used as a gold source and kept excessive in the process of producing KAu(CN) 2.

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保持金粉过量投料，控制氰化亚金钾溶液的浓缩水量是得到高纯度和高收率产品的关键。

The reduced gold powder was used as a gold source and kept excessive in the process of producing KAu(CN) 2.

youdao