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活塞环运动
| 行程
| 活塞环运动 | |
| auto. | piston-ring movement; ring movement |
| 行程 | |
| gen. | route or distance of travel |
| hydroel.st. | stroke |
| met. | course; passage; path; range; travel |
| tech. | run |
| |||
| piston-ring movement; ring movement | |||
| 活塞环运动: 2 phrases in 1 subject |
| Automobiles | 2 |
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