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oval-section
| piston
| oval section | |
| tech. | 椭圆 截面; 蛋形截面 |
| piston | |
| compr. | 电磁驱动活塞压缩机; 胀圈 |
| hydroel.st. | 活塞; 柱塞 |
| nautic. tech. | 活塞 |
| plast. | 模塞 |
| shoot. | 气枪活塞 |
| |||
| 椭圆形截面; 蛋形截面 | |||
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oval-section piston : 9 phrases in 4 subjects |
| Architecture | 1 |
| Automobiles | 1 |
| Bridge construction | 2 |
| Technology | 5 |
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