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词汇
extremely thick coal seam
释义
extremely thick coal seam
基本
例句
特厚煤层
Introduced the prevention methods and practice experience for the sixth pit in Xingshang Coal Mine adopted longwall inclined slicing experence mining method.
介绍了兴山矿六井采用倾斜分层走向长壁采煤法开采特厚煤层,防治自然发火的经验。
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更新时间:2025/3/4 20:28:55