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21. | direction of tractio |
| 牵引方向 |
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22. | tractor-drawn lawn mower |
| 牵引割草机 |
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23. | trailed fire pump |
| 牵引消防泵 |
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24. | traction substation |
| 牵引变电所 |
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25. | traction electric machine |
| 牵引电机 |
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26. | driving component |
| 牵引构件 |
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27. | electric traction apparatus |
| 牵引电器 |
|
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28. | pulling phenomenon |
| 牵引现象 |
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29. | traction transformer |
| 牵引变压器 |
|
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30. | adhesion traction |
| 粘附牵引 |
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