“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	unitary semigroup unitary semisimilarity unitary semi-similitude unitary similarity unitary similar matrix unitary sociable number unitary space unitary spin unitary subalgebra unitary subring unitary symmetry unitary symplectic group unitary transformation unitary transformation group unitary trick unitary unimodular group unitary vector space unit ausiliary transformer unit automatic start-up and shut-down control unit ball unit basis unit bore system unit boundary unit box unit brightness

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