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| 道路面层; 毡层 | |||
| 磨耗层 | |||
| 毛毯外套 | |||
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| 薄层路面; 沥青混合料表面处治法用于路面养护修理 | |||
| carpet coat: 5 phrases in 2 subjects |
| Bridge construction | 1 |
| Technology | 4 |
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