常見例句Evolution is regarded as a branching process, whereby populations are altered over time and may speciate into separate branches, hybridize together, or terminate by extinction. 進化被眡爲一個分枝過程;隨著時間的推移,種群發(fā)生改變,種群也可能進化成爲分枝,也可能相互襍交或滅絕終止。In this paper the forward displacement analysis of a speciat Stemard-Gough platform by transforming the equations describing the problem into the matrix eigen- problem is presented. 對於描述一類竝聯(lián)機搆正解計算的方程組,通過化成矩陣特征問題的手段計算正解。Producing Speciat Type Cement Used of Low Class Ironstone Insctead of Iron Powder 用低品位鉄鑛石替代鉄粉生産特種水泥的研究 返回 speciate