a couple of 两个;几个; 两三个,几个; 一对,一双;几个; 一对..., 三两个..; 一对,一双;几个
couple n. 1.一对,一双。 2.配偶,夫妇,未婚夫妻,一对舞伴。 3.〔口语〕交媾;【物理学】力偶;电偶;【天文学】联星。 4.〔口语〕(少数)几个,两三个。 an old couple老两口儿。 a married couple夫妇。 a pack of 20 couple二十对的一群猎犬。 a thermo-electric couple温差电偶。 a couple of days 二三日,数日。 go [hunt, run] in couples 总是成双成对;协力。 vt. 1.(两支)拴在一起,配合,连接。 2.使结婚;(使)交配。 3.由…联想到(…);把…同联系起来。 couple two railroad coaches 把两节铁路车厢连接起来。 vi. 拥抱,搂抱;交尾;结婚;结合,配合。
Pole assignment for the first order coupled generalized control systems 一阶耦合广义控制系统的极点配置问题
As corollaries , we get the strong law of large numbers for the frequencies of occurrence of states and ordered couple of states for markov chains indexed by a homogeneous tree 作为推论,得到了齐次树指标可列马氏链关于状态和状态序偶出现频率的强大数定律。
The models of analyzing temperature and structure are established . temperature increment and deformation are discussed with finite element method and ordered coupling method . maximum tensile stress criterion is chosen as the destroying criterion of components 首先建立了光学元件温升和结构分析模型,用有限元法和序贯耦合法计算材料的温升和变形,同时选取最大拉应力准则作为材料的破坏准则。
Secondly , definitions of a extended bethe tree , bethe tree and cayley tree are introduced . further , the even - odd markov chain fields and markov chain fields indexed by a extended bethe tree , bethe tree and cayley tree are defined . subsequently the strong limit theorems proved above are applied to the study of all kinds of even - odd markov chain fields and markov chain fields defined above , which both extend the conclusions in [ 30 ] and [ 39 ] and prove a class of strong limit theorems for the even - odd markov chain fields and markov chain fields . as corollaries , we obtain some strong limit theorems for the frequencies of occurrence of states and ordered couples of states for the even - odd markov chain fields and markov chain fields . lastly , some coarse estimates are gained about the state occurrence frequencies for all kinds of even - odd markov chain fields and markov chain fields defined in the paper 然后把前面所证得的一类强极限定理应用到本文中所定义的各种奇偶马尔可夫链场、马尔可夫链场的研究工作中,从而推广了[ 30 ]和[ 39 ]中的结论,获得了本论文中所定义的各种奇偶马尔可夫链场、马尔可夫链场的一类强极限定理。作为这一类强极限定理的推论得到了状态和状态序偶出现频率的一类强极限定理。最后,给出了本论文中所定义的各种奇偶马尔可夫链场、马尔可夫链场上状态出现频率的若干粗略估计。
The influence of optical source chirp on femtosecond soliton interaction is studied numerically , and the unequal amplitude method can reduce the interaction . in addition high - order coupled equations governing the evolution of two orthogonal polarization components of the same wave are derived by using multi - dimension derivation expansion method of singular perturbation theory and the dispersion relation . furthermore , a class of optical solitary wave solutions , such as the bright - bright , dark - dark , bright - dark , and combined solitary waves are found under certain parametric conditions 数值研究了源啁啾飞秒孤子间相互作用,提出了抑制该作用的可能方案;用奇异摄动多重尺度导数展开法和色散关系推导了耦合高阶非线性薛定谔方程( chnlse ) ,并用行波变换法得到了一系列孤波解析解,分析了它们在光纤中传输的必要条件,也讨论了它们的稳定性,为实现飞秒光脉冲在光纤中的无畸变传输作理论上的探索。
2 ) based on the maxwell equations of nonlinear media , high - order coupled equations governing the evolution of two orthogonal polarization components of the same wave are derived by using multi - dimension derivation expansion method of singular perturbation theory , and the suitable application range is presented 2 )利用奇异摄动多重尺度导数展开法,从非线性介质中的maxwell方程组出发,导出了包含高阶摄动项的同一光波不同偏振分量的耦合高阶非线性薛定谔方程,并给出了其适用范围。