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| 活塞环压缩环; 气环 | |||
| 压紧圈 | |||
| 压环 | |||
| 压圈 | |||
| 耐压环; 压缩环 | |||
| 压力环; 压紧环 | |||
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pressure ring : 11 phrases in 4 subjects |
| Automobiles | 1 |
| Compressors | 3 |
| Electric machinery | 1 |
| Technology | 6 |
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