“Yongcheng Shi”的概念、定义、翻译、参考文献-科学参考

单词	Yongcheng Shi
释义	Yongcheng Shi Encyclopedia 理学商丘市释 Yongcheng Shi永城市中国河南省辖县级市。由商丘市代管。
随便看	concave lens concave metric concave minimization problem concave mirror concave operator concave polygon concave polyhedral angle concave polyhedron concave probability measure concave programming concaver concave sequence concave space concave surface concave-up concave-up curve concave upward concavity concavity coefficient concavity cut concavity cutting-plane method concavity downward concavo-concave concavo-convex concavo-convex lens

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。