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71. | open-shut control system |
| 开-闭式控制系统 |
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72. | open looped pulse system |
| 开环脉冲系统 |
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73. | open power fluid system |
| 开式动力液系统 |
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74. | open cooling water system |
| 开式冷却水系统 |
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75. | open-cycle reactor system |
| 开式循环反应堆系统 |
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76. | open tube diffusion system |
| 开管扩散装置 |
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77. | open-wire carrier system |
| 明线载波系统 |
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78. | open-stored water system |
| 开式供水系统 |
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79. | open blood vascular system |
| 开放血液系统 |
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80. | open-circuit hydraulic system |
| 开式循环液压系统 |
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