“Double cross”的概念、定义、翻译、参考文献-科学参考

单词	Double cross
释义	Double cross Encyclopedia 农学授粉释 Double cross林木双杂交 4个亲本先配成两个单交杂种，再用两个单交杂种进行杂交。简称双交。
随便看	principal distribution parameter principal divisor principal dual ideal principal element principal element elimination principal elliptic term principal enumeration principal equation principal escaped point principal factor principal fiber bundle principal fiber space principal fibration principal filter principal focus principal for facet sequence principal form principal formula principal fractional ideal principal fractionary ideal principal function principal function classes principal functor principal fundamental solution principal G bundle

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。