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掘进工程
hydrol.
headworks
;
inlet structure
tech.
headwords
;
head works
掘进工程
指为进行采矿和其他工程目的，在地下开凿的各类通道和硐室的总称
expl.
drive
;
excavation
掘进工程:
3 phrases
in 1 subject
Earth sciences
3
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