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| 紧急安全阀; 泄压阀 | |||
| 突开阀 | |||
| 安全阀; 压力容器上的安全阀; 紧急阀; 突开式安全阀 | |||
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| 紧急安全阀 | |||
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pop valve : 17 phrases in 6 subjects |
| Automobiles | 2 |
| Drilling | 6 |
| Hydroelectric power stations | 2 |
| Oil / petroleum | 2 |
| Surgery | 1 |
| Technology | 4 |
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