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Terms for subject General containing 井筒 | all forms | in specified order only
ChineseEnglish
上部井筒foreshaft
井筒中部mid-shaft
用作梯级的井筒内横木stemple
井筒和煤层交叉处的横巷bord
井筒工blocker
井筒木隔壁widwall
井筒横梁biat

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