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| 51. | astern ignition cam |
| 倒车发火凸轮 |
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| 52. | cam pitch curve |
| 凸轮理论轮廓 |
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| 53. | camless automatic machine |
| 无凸轮自动机 |
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| 54. | two-lobe rotary pump |
| 双凸轮旋转泵 |
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| 55. | half-compression relief cam |
| 降压调节凸轮 |
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| 56. | fast advance cam |
| 快拨凸轮 |
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| 57. | constant-acceleration cam |
| 等加速凸轮 |
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| 58. | three-dimensional cam mechanism |
| 空间凸轮机构 |
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| 59. | forming and profiling machine for cams |
| 凸轮靠模铣床 |
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| 60. | square root compensating cam |
| 平方根补偿凸轮 |
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