“古代报汛”的概念、定义、翻译、参考文献-科学参考

单词	古代报汛
释义	古代报汛 Encyclopedia 理学古代报讯释 transmission of flood message in ancient China古代报汛中国古代采用快于水流速度的方法，把汛期所观察到的河流上游涨水情况向下游和朝廷传递，以便加以防御的制度和措施。
随便看	properly triangular matrix proper maintenance method of photographic lens proper map proper mapping proper mass proper modification proper morphism proper motion proper motion group proper motion in declination proper motion in right ascension proper motion member proper motion membership proper motion star proper name proper name of a function proper natural number proper nilpotent element proper node proper non-inferior solution proper nonvoid subset proper number proper open covering proper order dictionary proper orthochronous Lorentz group

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