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来源:雅诚德英语网
The studied platinum - gold placer occurs in Quaternary alluvial - diluvial a piedmont valley of ultrabasic rocks, Northwest China.
该铂-金砂矿产于超基性岩体山前谷地的第四纪冲积- 洪积层中。
The studied platinum - gold placer occurs in Quaternary alluvial - diluvial a piedmont valley of ultrabasic rocks, Northwest China.
该铂-金砂矿产于超基性岩体山前谷地的第四纪冲积- 洪积层中。