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to phrases
prospecting hole
tech.
勘探孔
;
探孔
;
普查钻
prospect hole
coal.
探孔〔井〕
el.
勘探
钻
孔
eng.geol.
勘探孔
hydroel.st.
探井
;
试坑
;
探孔
tech.
试孔
;
普查钻
prospecting hole
:
6 phrases
in 1 subject
Technology
6
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