“contour tillage”的概念、定义、翻译、参考文献-科学参考

单词	contour tillage
释义	contour tillage Encyclopedia 工学水土保持农业耕作措施释 contour cultivation；contour tillage等高耕作在坡面沿等高线方向所实施的耕犁、做畦、做垄沟及栽培等作业。又称横坡耕作[注]。是水土保持农业耕作措施。梯田也是广义的等高耕作形式。
随便看	graded group graded heterojunction graded homomorphism graded Hopf algebra graded ideal graded index graded index fiber graded index lens graded index lens, GRIN graded index media graded-index media =graded index 陡度折射率 graded junction graded lattice graded Lie algebra graded manifold graded medical treatment graded module graded morphism graded object graded pn junction graded-polarizable graded projective dimension graded protection of wild plants graded [refractive] index

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