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| 阀挡 | |||
| 阀盖; 阀档; 升程限制器; 阀片升程限制器 | |||
| 阀门防护罩 | |||
| 阀门挡板; 阀门行程限制器 | |||
| 阀柱护套; 阀门限程器 | |||
| valve guard: 21 phrases in 7 subjects |
| Compressors | 1 |
| Electronics | 3 |
| Hydroelectric power stations | 3 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Technology | 9 |
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