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Terms for subject China containing 井 | all forms
ChineseEnglish
井上井下surface and underground
井下作业work in underground coal mines
井下作业职工miners working underground
井下空气underground air
各种矿场井下劳动使用妇女公约Convention Concerning the Employment of Women on Underground Work in Mines of All Kinds
渗井seepage well
矿井underground mine
矿井生产系统mine production system

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