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| 旋塞龙头; 开关龙头; 旋塞触止 | |||
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cock stop : 32 phrases in 12 subjects |
| Architecture | 2 |
| Automobiles | 1 |
| Chemistry | 1 |
| Drilling | 5 |
| Ecology | 2 |
| Engineering geology | 1 |
| Metrology | 3 |
| Oil / petroleum | 2 |
| Rail transport | 2 |
| Skydiving | 1 |
| Solar power | 1 |
| Technology | 11 |
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