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| 机械加固法 | |||
| 改善级配加固法; 改善級配加固法 | |||
| 机械稳定; 机械加固; 土的机械稳定处理 | |||
| mechanical stabilization: 6 phrases in 2 subjects |
| Desert science | 3 |
| Technology | 3 |
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