 |
| |||
| 液体密封装置 | |||
| 液力密封 | |||
| 水力压紧; 水封器; 水压防漏装置; 液密封 | |||
| 液封盖 | |||
| 液封 | |||
| |||
| 液体密封 | |||
| 水封; 液封 | |||
| liquid packing: 6 phrases in 4 subjects |
| Drilling | 1 |
| Metallurgy | 2 |
| Packaging | 1 |
| Pest control | 2 |
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