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地下空洞
el. underground cavity
eng.geol. subterranean cavity
tech. camouflet
在地下深部爆炸时形成的地下空洞
gen. camouflet
深部爆炸形成地下空洞
eng.geol. camouflet
地下空洞
: 5 phrases in 3 subjects
Engineering geology2
Metallurgy1
Technology2

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