“桑园围”的概念、定义、翻译、参考文献-科学参考

单词	桑园围
释义	桑园围 Encyclopedia 工学[中国古代水利工程]释 Sangyuan polder桑园围中国古代建于珠江三角洲的大型基围水利工程。
随便看	principal line principal line of photograph principally analytic set principally polarized variety principal mapping principal matrix principal maximum principal measure principal minimum principal minor principal minor array principal minor determinant principal module principal moment principal moment of inertia principal net of a mapping principal net of the flow principal neutral point principal nilpotent orbit principal norm principal normal principal normal complex principal normal form principal normal line principal normal plane

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。