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Technology
containing
井下的
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上下等径的井
well of one diameter
下套管的井
cased bore hole
井下工作面以外的工作
back work
井的下沉
well sinking
井的下沉
well lowering
切断井下钢丝绳的割刀
hook rope knife
地下室窗前的采光井
dry area
地下室窗前的采光井
areaway
未下套管的井
untubed well
未下套管的井段
bare foot
正在下沉的井筒
shaft during sinking
自下向上的凿井
up-over
负责井下工作的副矿长
underground undermanager
逆地下水布置的井
upstream well
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