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pumping shaft
tech. 扬水竖井; 排水井; 抽水竖井
pump shaft
hydroel.st. 泵轴
pumping shaft
: 56 phrases in 9 subjects
Agriculture1
Automobiles3
Compressors1
Electronics5
Hydroelectric power stations7
Nautical2
Oil / petroleum1
Shipbuilding3
Technology33