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| 密封皱纹管; 密封波纹管 | |||
| seal bellows: 18 phrases in 7 subjects |
| Automobiles | 1 |
| Chemistry | 1 |
| Electronics | 2 |
| Hydroelectric power stations | 3 |
| Metallurgy | 1 |
| Oil / petroleum | 2 |
| Technology | 8 |
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