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锥形钻头
gen.
cone bit
eng.geol.
point bit
;
taper bit
tech.
corncob bit
(换径用)
;
splayed boring tool
;
tapered bit
锥形
不取芯
钻头
tech.
taper bit
锥形
无岩芯
钻头
tech.
cone bit
锥形钻头
:
22 phrases
in 5 subjects
Drilling
1
Earth sciences
1
Engineering geology
4
Oil / petroleum
5
Technology
11
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