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| cut-back valve | |||
| reversing valve | |||
| inverted valve | |||
| back-pressure valve; reverse valve | |||
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| backout valve | |||
| 反向 阀: 10 phrases in 5 subjects |
| Automobiles | 1 |
| Drilling | 1 |
| Hydroelectric power stations | 1 |
| Mechanics | 1 |
| Technology | 6 |
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