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| 71. | bidirectional converter |
| 双向转换器 |
|
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| | |
| 72. | two-directional clutch |
| 双向离合器 |
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| 73. | two-way accelerator |
| 双向加速器 |
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| | |
| 74. | bidirectional flight lines |
| 双向航线 |
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| | |
| 75. | two-way coordinates |
| 双向坐标 |
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| 76. | pneumatic reversible drill |
| 双向风钻 |
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| 77. | two-way cylinder |
| 双向油缸 |
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| 78. | bidirectional current |
| 双向电流 |
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| 79. | two-way traffic zone |
| 双向道 |
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| 80. | bi-directional relay |
| 双向继电器 |
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