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rangeland soil erosion
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rangeland soil erosion
Encyclopedia
农学
草地水土流失
释
rangeland soil erosion
草地水土流失
草地土壤在水力、风力、重力及冻融等自然营力和人类活动的作用下,水土资源和土地生产力的破坏和损失,包括土地表层侵蚀及水的损失。
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symmetric Hermitian manifold
symmetric Hermitian space
symmetric homogeneous space
symmetric homomorphism
symmetric hyperbolic equation
symmetric hyperbolic operator
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symmetric linear programming
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