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pile hammer
bridg.constr. 桩锤
dril. 打桩锤
el. 落锤
tools 打桩机
pile-hammer
chem. 打桩机
pile hammer: 98 phrases in 9 subjects
Bridge construction16
Engineering geology11
Hydroelectric power stations2
Metallurgy1
Nautical1
Oil / petroleum2
Rail transport1
Shipbuilding4
Technology60