“九九”的概念、定义、翻译、参考文献-科学参考

单词	九九
释义	九九 Encyclopedia 理学〔术语和基本概念条目〕释 multiplication九九中国古代数学中的乘法口诀或表格，因早先的形式始于“九九八十一”，与现在次序相反，故名。又称九九表、九九之术。
随便看	elliptical system elliptical waveguides elliptic argument elliptic barrel elliptic bearing elliptic boundary-value problem elliptic capacity elliptic case elliptic catenary elliptic characteristic elliptic cohomology elliptic collineation elliptic comet elliptic compass elliptic complex elliptic conchoid elliptic conductor potential elliptic cone elliptic cone point elliptic coordinate elliptic coordinate system elliptic cosine elliptic cotangent elliptic curve elliptic curve cipher

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。