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

单词	water levelling in ancient China
释义	water levelling in ancient China Encyclopedia 理学古代水准仪释 water levelling in ancient China　　　　古代水准仪中国古代测量高程的仪器，古代称为“水平”或“水平仪”。
随便看	principal G-object principal graduate principal graph principal group principal groupoid principal homogeneous G-set principal homogeneous space principal homomorphism principal horizontal line of photograph principal ideal principal ideal domain principal ideal ring principal ideal theorem principal idele principal idempotent principal idempotent element principal identity principal indecomposable module principal indecomposable representation principal integral domain principal integral representation principal invariant principal isotope principal isotropy group principalization

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