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关注:1
2013-05-23 12:21
求翻译:those mines which show serious mining subsidence all display that disturbance coefficient virtually close to 1, the ratio of depth to thickness close to or lower than 50, the ratio of width to depth almost higher than 1, subsidence coefficient lies是什么意思?![]() ![]() those mines which show serious mining subsidence all display that disturbance coefficient virtually close to 1, the ratio of depth to thickness close to or lower than 50, the ratio of width to depth almost higher than 1, subsidence coefficient lies
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