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關注：1
2013-05-23 12:21
求翻譯：stage BC is the stage of continuous injection after coal seam is Point B shows the beginning of fracture of coal seam,是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
stage BC is the stage of continuous injection after coal seam is Point B shows the beginning of fracture of coal seam,
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