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波纹混凝土
| 路面
| 波纹混凝土 | |
| tech. | corrugated concrete |
| 路面 | |
| eng.geol. | paving; permanent way |
| hydroel.st. | pavement; road surface |
| oil | roadway |
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| corrugated concrete | |||
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波纹混凝土 : 4 phrases in 1 subject |
| Technology | 4 |
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