“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	beam beam and straddle monorail integrated bridge beam angle beam angle of scattering beam antenna beam aperture beam area beam-assisted desorption beam background beam bridge for pipeline beam broadening beam chemistry beam column beam combiner beam combining fiber laser beam convergence beam cooling beam crane beam current beam current; beam intensity beam current convective instability beam diameter beam diaphragm beam dilution beam divergence

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。