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| 钢筋分布 (间距) | |||
| 钢筋间距; 配筋间距 | |||
| 钢筋分布; 筛条间距 | |||
| bar spacing: 7 phrases in 3 subjects |
| Hydroelectric power stations | 2 |
| Metallurgy | 3 |
| Technology | 2 |
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