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soil and water conservation forest-grass measures
释义
soil and water conservation forest-grass measures
Encyclopedia
农学
牧区水利
释
soil and water conservation forest-grass measures
水土保持灌草措施
采用灌草植被对水土流失区域进行恢复植被,减少地面土壤侵蚀,通过造林、种草及其管护措施增加植被覆盖率,进而维护和提高草地生产力的措施手段。
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trigonometric power formula
trigonometric problem
trigonometric product formula
trigonometric pseudo-spectral method
trigonometric ratio
trigonometric regression
trigonometric representation
trigonometric series
trigonometric series formula
trigonometric solution
trigonometric spline
trigonometric substitution
trigonometric sum
trigonometric-sum estimate
trigonometric system
trigonometric transformation
trigonometric weight
trigonometry
trigonometry angle
trigon/trigonid
trigonum
trigraded ring
trigram
trihapto ligand
trihedral
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