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to phrases
drop shaft
el.
跌水竖井
eng.geol.
沉井
;
沉井法开凿
竖井
;
跌水井
expl.
溜井
以自然下落方式运输所采矿石的小立井,也叫漏斗天井,参见 draw shaft;orepass
hydroel.st.
跌水式竖井
tech.
溜井
;
自重运输井筒
;
跌水
竖
井
;
倾卸轴
drop shaft
:
7 phrases
in 2 subjects
Automobiles
1
Technology
6
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