evolution n. 1.发展,发育;开展。 2.(气体等的)放出;散出,放出物,散出物。 3.发生;演变;【生物学】演化,进化;进化论(opp. creationism)。 4.【生物学】种族发生,系统发育;个体发生;个体发育。 5.【天文学】(天体)形成。 6.【数学】开方。 7.〔军〕按计划行动,位置变换。 8.(跳舞等的)规定动作。 an evolution unit 〔军〕机动单位。 the theory [doctrine] of evolution 进化论。 -al, -ary adj. 发展的;进化(论)的;展开的。 n. -ism 进化论,进化主义 (opp. creationism)。
Analysis of dynamical evolution of market structure based on network externality 基于网络外部性的市场结构动态演化分析
Dynamical evolution of spatial bright solitions in cogarithmically nonlinear electric media under weak amplitude condition was studied 摘要研究了对数型非线性电介质中低振幅空间明孤子的动态演化特性。
Given the initial conditions including ( 1 ) number density distribution in space which has the similar form to the present day ones , ( 2 ) both the power law and gaussian mass functions for clusters , and ( 3 ) two different velocity distributions which one has a constant dispersion and the other is described by the eddington formula , the dynamical evolution of globular clusters in our milky way galaxy is investigated in detail by means of monte carlo simulations 本文采用与观测结果具有相同形式的球状星团空间密度分布函数,在给定两种球状星团系统的初始质量谱(幂律的和对数高斯的)和两种球状星团系统的初始速度分布函数(爱丁顿速度分布函数和常数的速度弥散度)条件下,我们采用montecarlo的方法对球状星团系统的动力学演化进行讨论。