“drainage in ancient China”的概念、定义、翻译、参考文献-科学参考

单词	drainage in ancient China
释义	drainage in ancient China Encyclopedia 工学中国水利科学技术史释 drainage in ancient China中国古代排水中国古代排干渍涝沼泽地区积水和降低地下水位的工程技术。即使在圩垸和城市建设中，这也是必要措施。
随便看	limit ordinal limit ordinal number limit point limit-point case limit point group limit point of a set limit point of a trajectory limit-point type limit position limit-preserving functor limit priority limit process limit properties of expectation limit property limit relation limitron limit set limit set of a trajectory limit situations limit size for cocoon feeding limits of acceptable change limits of diagonalization limits of tolerance limit space limit spectrum

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