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| 贫〔少灰〕混凝土 | |||
| 贫混凝土 | |||
| 劣质混凝土 | |||
| 贫灰混凝土; 少水泥灰混凝土; 少灰混凝土 | |||
| poor concrete: 7 phrases in 3 subjects |
| Bridge construction | 2 |
| Engineering geology | 1 |
| Technology | 4 |
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