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down-hole
 down hole
dril. 井下
oil 井底
| hanger
 hanger
interntl.trade. 广告牌 ,报单
mech. 悬挂器; 吊钩
mount. 挂钩
skateboard. 悬轴
textile 挂物架; 衣架

to phrases
down hole
dril. 井下
oil 井底
down-hole
mining. 井下【下井】
down-hole: 111 phrases in 12 subjects
Automobiles1
Drilling27
Earth sciences3
Electronics1
Engineering geology2
Explosives and Explosive Ordnance Disposal9
General1
Golf1
Hydroelectric power stations2
Mining5
Oil / petroleum36
Technology23