- longwall
- 连续: 6年未出事故. There have been no a ...
- 工作面: working face; acting surface ...
- 连续工作的工作面循环: continuous face cycle
- 连续工作: continuous operation; continuous work◇连续工作继电器 continuous duty relay; 连续工作寿命试验 succession operation life test
- 连续工作日: running days; running working days
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