In ` George became ill', the verb ` became'is a copula.在Georgebecameill一句中,became是系词.Kendall is criterion of comparing the dependence of different kinds of Copula.在比较不同类Copula的相关性时,用Kendallτ作为比较的依据.This paper m...
The male gamete could not unite with the female.雄配子不能与雌配子结合.Gametes may develop without fertilization, or meiosis may substantially precede gamete formation.配子不经过受精也可能发育,若减数分裂先于配子形成,配子也可能发育.Objective : To investigate the...