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| 气门杆密封圈件; 阀门密封带; 阀封 | |||
| 活门密封 | |||
| 阀门密封 | |||
| 阀封阀座 | |||
| 阀密封 | |||
| 阀门装置水封; 气门密封件; 阀止水; 阀门作用; 阀门止水; 阀门密封 | |||
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valve seal : 44 phrases in 8 subjects |
| Automobiles | 11 |
| Chemistry | 1 |
| Electronics | 2 |
| Hydroelectric power stations | 4 |
| Mechanics | 1 |
| Metallurgy | 11 |
| Oil / petroleum | 6 |
| Technology | 8 |
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