mining and minerals
... Other equipment for the chemical industry 其他化工设备 MINING AND MINERALS 采矿和矿产品 Mining and quarrying 采矿和挖掘 ...
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本文叙述了中国人使用矿产品的先后次序，采矿坑峒、采矿方法及充填工艺的起源，和矿藏一词的由来。
The paper describes the sequence of mineral products used by the Chinese, mining pit and chamber, mining method and the source of the term "mineral resources".
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