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| 21. | raised flooring |
| 架空地板 |
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| 22. | overhead counter shaft |
| 架空副轴 |
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| 23. | overhead runway |
| 架空轨道 |
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| 24. | overhead gantry |
| 架空构架 |
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| 25. | overhead transmission gear |
| 架空传动装置 |
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| 26. | overhead conductor |
| 架空导线 |
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| 27. | aerial construction |
| 架空结构 |
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| 28. | overhead traffic light signal |
| 架空交通灯 |
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| 29. | overhead cable railway |
| 架空死 |
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| 30. | aerial cable line |
| 架空电缆线 |
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