[矿业]
remote control coal mining
... remnant pillar 残留矿柱 remote control coal mining 遥控采煤法 renewable gypsum 再生石膏 ...
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... 遥控彩电 a remote control colour TV set; 遥控采煤法 push button coal mining; remote control coal mining; 遥控操纵装置 teleoperator; ...
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