... quality verification质量检定 quarrying industry采石业 quick response system快速响应系统 ...
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... 煤矿业 coal mining 石矿业 quarrying industry 矿业和矿业坏公司 mining & allied machinery corp ...
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Mining & Quarrying Industry 采掘
Mining and Quarrying Industry 采掘业
·2,447,543篇论文数据，部分数据来源于NoteExpress
Although, by 1981, the proportion of Welsh employees working in mining and quarrying was just 3.8%, the coal industry still had a symbolic place at the heart of ideas of the Welsh nation.
BBC: Wales politics
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