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to phrases
hollow bit
desert.
空心钻
dril.
取心钻头
eng.geol.
空心钻头
met.
岩心 〔取心〕钻头
oil
岩心钻头
tech.
岩芯钻头
;
空心钎头
hollow bit
:
8 phrases
in 3 subjects
Engineering geology
2
Metallurgy
1
Technology
5
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