“difference family”的概念、定义、翻译、参考文献-科学参考

单词	difference family
释义	difference family Encyclopedia 理学组合设计释 difference family差族设是阶阿贝尔群，其运算为加法，是群上的子集族，式中，。令。若中每个非零元在多重集中恰出现次，则称为上的一个差族。当时，简记为差族。当时，差族即为差集。 Mathematics ＞组合数学、组合设计与图论＞组合设计＞释义 difference family差族 difference family差族，广义差集
随便看	quality of life quality of motor transportation quality of ore quality of population quality of raw silk quality of regulation quality of rock mass quality of service quality of service management for grid quality of service of computer networks quality of service on multimedia communicaitons quality of service parameters quality of service, QoS quality of service routing quality of strategies quality of surfacewater quality of unit product quality of water resources quality of Web service quality of work life quality paper quality power strategy quality protein maize quality record quality regulation

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。