“arrangement of farmland drains”的概念、定义、翻译、参考文献-科学参考

单词	arrangement of farmland drains
释义	arrangement of farmland drains Encyclopedia 农学农业水土工程释 arrangement of farmland drains农田排水沟布设形式农田排水沟与灌溉渠、道路的配合设置方式。
随便看	concave kite concave lens concave metric concave minimization problem concave mirror concave operator concave polygon concave polyhedral angle concave polyhedron concave probability measure concave programming concaver concave sequence concave space concave surface concave-up concave-up curve concave upward concavity concavity coefficient concavity cut concavity cutting-plane method concavity downward concavo-concave concavo-convex

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