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| 半挖半填式截面; 半挖半填式断面; 半填半挖横断面 | |||
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| 半填半挖式断面; 半挖半填式断面 | |||
| 半挖半填截面 | |||
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cut-and-fill section : 1 phrase in 1 subject |
| Technology | 1 |
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