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71. | balancing booster |
| 平衡升压机 |
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72. | booster explosive |
| 传爆药 |
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73. | booster machinery |
| 加速装置 |
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74. | positive booster |
| 升压器 |
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75. | booster magneto |
| 助力永磁发电机 |
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76. | reversible booster |
| 【电】可逆增压机 |
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77. | capacity booster |
| 电容性升压电机 |
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78. | vibrating booster |
| 振动式升压器 |
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79. | antenna booster |
| 天线放大器; 天线升压器 |
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80. | Lancashire booster |
| 兰开夏升压器 |
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