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| 等高剥离〔开采〕 | |||
| 等高线剥离 | |||
| 等高开采; 等高剥离 | |||
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| 等高带 | |||
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contour stripping : 7 phrases in 3 subjects |
| Agriculture | 3 |
| Hydraulics | 1 |
| Technology | 3 |
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