“summation sign”的概念、定义、翻译、参考文献-科学参考

单词	summation sign
释义	summation sign Mathematics summation sign求和符号
随便看	half density radius half-density radius half diallel mating design half-disk half-diving depth half-duplex transmission half-dyeing time half egg enucleation method Half Energy Width half-exact functor half-exact operation half-fin anchovy Half Flame，Half Brine half form bundle half-GCD half graben half graben basin half grain leather half-group half-groupoid half-hard rock half-homomorphism half horst half-inferior ovary half-infinite programming

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。