| |||
sealing system | |||
tightness system | |||
sealed system |
密封系统: 25 phrases in 12 subjects |
Automobiles | 1 |
Business | 2 |
Commerce | 1 |
Electric machinery | 1 |
Electronics | 6 |
Mechanics | 1 |
Metallurgy | 1 |
Navigation | 1 |
Nuclear physics | 1 |
Oil / petroleum | 1 |
Space | 3 |
Technology | 6 |