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valve piston |
阀活塞 : 79 phrases in 12 subjects |
Agriculture | 1 |
Automobiles | 10 |
Aviation | 1 |
Compressors | 4 |
Construction | 1 |
Drilling | 3 |
Hydroelectric power stations | 1 |
Metallurgy | 2 |
Nautical | 1 |
Oil / petroleum | 7 |
Rail transport | 2 |
Technology | 46 |