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双工作面
同一煤层〈分层〉内同时生产并共用工作面运输巷的两个相邻长壁工作面。两工作面相向运煤的双工作面又称“对拉工作面”
expl.
double-unit face
;
double face
双 工作面
:
3 phrases
in 2 subjects
Automobiles
1
Technology
2
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