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intercepting ditch on grassland
释义
intercepting ditch on grassland
Encyclopedia
农学
草地水土保持
释
intercepting ditch on grassland
草地截水沟
在草地坡度5°以上的坡面,横贯坡向,每隔适当距离,人工修筑的具有一定纵坡的沟道。草地坡面治理水土流失的有效工程措施。
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Simien National Park World Natural Heritage of Ethiopia
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similarity circle
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similarity conversion of hydraulic turbine
similarity criterion
similarity dimension
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similarity invariant
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