研究了重氮母片的特性对重氮复印的影响。
The influence of the characteristics of diazo master on the copy process were studied.
二云母片岩不仅是矿源层，而且还是赋矿围岩。
Two mica schists are considered to be the source bed and host rock of gold.
二云母片岩不仅是矿源层，而且还是赋矿围岩。
Two mica schists are considered to be the source bed and host rock of gold.
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