讨论了纯系的纯合性 、 遗传稳定性以及配合力等方面的特征.Purity, genetic stability and combining ability of pure lines were discussed.结论 Zmu 1:DHP 品系的基因纯合性及个体一致性较DHP品系高.Conclusion The genetic homogeneity and the individual identity of Zmu - 1 : DH...
Jim signaled his helplessness to Mary to leave the party.吉姆无法从宴会脱身时,他向玛丽使了个眼色,表示无可奈何.The incident left me with a sense of helplessness.这次事件使我产生一种无能为力,听天由命的感觉.A feeling of utter helplessness washed over him.一种全然无助的感觉涌上他的心...