- pay thickness
- 富矿: rich ore; high-grade ore; en ...
- 层: I storey; tier; stratum
- 富矿: [矿物学] rich ore; high-grade ore; enriched ore
- 矿层: ore bed; ore horizon; seam; stratum of ores; ore formation; manto 可采矿层 a workable seam; 矿层开采条件 seam condition; 矿层露头 outbowed; 矿层倾斜 seam pitch; 矿层图 seam plan; 矿层走向 seam strike
- 采富矿: gut
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