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水堵 shuǐdǔ
dril. water bosh; water packing-off; water plugging
oil water block
水堵
: 150 phrases in 18 subjects
Agriculture1
Automobiles2
Aviation1
Desert science1
Drilling14
Electronics2
Engineering geology4
Explosives and Explosive Ordnance Disposal5
General5
Hydroelectric power stations1
Metallurgy27
Mining7
Navigation1
Oil / petroleum34
Rail transport1
Shipbuilding1
Technology41
Water resources2