对不同类型金矿石取样方法和加工方法进行了实验研究。

Sampling and sample processing methods for different type of gold ores are studied through the experiments.

youdao

对不同类型金矿石取样方法和加工方法进行了实验研究。

Sampling and sample processing methods for different type of gold ores are studied through the experiments.

youdao