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手阀
refrig. hand valve
tech. hand control valve
手阀
: 124 phrases in 20 subjects
Automobiles9
Aviation9
Chemistry1
Compressors4
Construction3
Drilling6
Earth sciences1
Hydroelectric power stations1
Mechanics1
Metallurgy4
Nautical2
Oil / petroleum9
Rail transport5
Refrigeration7
Rowing2
Shipbuilding1
Solar power1
Space4
Steel production2
Technology52