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采空区内运输巷 采空区平巷 采区联络煤巷
gateway
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煤巷 采空区内运输巷
gateroad
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采空区内运输巷
gate road gate way
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采空区平巷
bog gate way gob heading
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采空区内平巷
bog road bogroad gob heading gob road
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采空区
[采矿工程] goaf; gob; stull; learies; worked-out section
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采空区内的巷道
brush
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采空区充填
goaf filling goaf stowing gob stowing
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采空区臭味
gob stink
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采空区处理
goaf management
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采空区底板
gob floor
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采空区废石
gob
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采空区火灾
gob fire
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采空区落顶
gob caving
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采空区脱气
goaf degasification
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采空区着火
gobfire
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充填采空区
bashing
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工作;采空区
worked out section
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