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| 黏土密实的防渗墙 | |||
| 黏土护层; 黏土覆蓋; 黏土鋪蓋水工; 黏土護層隧道 | |||
| 黏土铺盖 | |||
| 黏土帷幕; 黏土覆盖层; 黏土封层; 黏土层; 垫土 | |||
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clay blanket : 7 phrases in 3 subjects |
| Architecture | 1 |
| Hydroelectric power stations | 2 |
| Technology | 4 |
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