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| 气门升行程 | |||
| 阀冲程; 活门行程; 汽门行程 | |||
| 阀杆冲程行程 | |||
| 阀门行程; 气门行程; 阀行程; 阀门冲程 | |||
| valve stroke: 8 phrases in 4 subjects |
| Compressors | 1 |
| Electronics | 1 |
| Hydroelectric power stations | 1 |
| Technology | 5 |
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