“agriculture history in Hexi region”的概念、定义、翻译、参考文献-科学参考

单词	agriculture history in Hexi region
释义	agriculture history in Hexi region Encyclopedia 理学中国农业史释 agriculture history in Hexi region河西地区农业史中国黄河以西天然走廊地区的农业发展历史。
随便看	invariance theory invariance thesis invariant invariant amplitude invariant approach invariant attracting set invariant average invariant basis property invariant bilinear function invariant boundary invariant central manifold invariant circle invariant class of groups invariant complement invariant component invariant cone invariant continuation invariant curve invariant decision function invariant decision problem invariant decision procedure invariant decomposition invariant definition invariant delta-function invariant density

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