说明：双击或选中下面任意单词，将显示该词的音标、读音、翻译等；选中中文或多个词，将显示翻译。 您的位置：首页 -> 词典 -> 势对称 1)  potential symmetries 势对称 1. The potential symmetries and invariant solutions of Benney equation were calculated by differential form Wu s method. 利用微分形式的吴方法计算了Benney方程的势对称及其不变解。 2. In this thesis, we mainly discuss the potential symmetries and linearization of the nonlinear evolution equations. 本论文主要研究非线性发展方程组及单方程的势对称以及它们的线性化。 3. The classical symmetries and their invariant solutions of Kdv-Burgers-Kuramoto equation are discussed with the help of Wu\'s method in differential forms,and potential symmetries of Burgers equation are obtained. 本文利用微分形式的吴方法讨论了Kdv-Burgers-Kuramoto方程的古典对称及其不变解,同时得到了Burgers方程的势对称,并利用这些势对称作用到Burgers方程的解上从而得到了该方程更多的精确解。 2)  potential symmetry 势对称 1. By means of differential Wu-method,the classical symmetry and potential symmetry classification of a variable-coefficient wave equations u_(xx)=H(x)u_(tt)with a arbi- trary function is investigated. 首先给出一类含有任意函数的变系数波动方程u_(xx)=H(x)u_(tt)的古典对称及其势对称的完全分类,然后借助于这个波动方程的对称分类,系统讨论了含有两个任意函数的一类组合方程的势对称分类,所得结果确实扩充了原方程的对称。 2. In this paper,a complete classical and potential symmetry classification is obtained for a linear wave equation containing an arbitrary function. 先给出了含有一个任意函数的线性波动方程的古典和势对称的完全分类。 3)  symmetrical potential 对称势 1. In terms of the isospin-dependent quantum molecular dynamics model (IQMD),important isospin effect in the halo-neutron nucleus induced reaction mechanism is investigated, and consequently,the symmetrical potential form is extracted in the intermediate energy heavy ion collision. 利用同位旋相关量子分子动力学理论研究了中子晕核引起核反应机制中重要的同位旋效应以提取对称势。 2. The calculation results show that the ratio of preequilibrium emission neutrons to protons is sensitive to the symmetrical potential and insensitive to the isospin dependence of in medium nucleonnucleon collision cross section from low beam energy region to high energy region, in which nucleonnucleon collision dynamics is dominant, n. 结果表明除低能区外 ,在 10 0MeV/u以上核子 -核子碰撞动力学效应起主要作用的能区 ,前平衡发射的中子 -质子比仍然对介质中核子 -核子碰撞截面的同位旋效应不灵敏 ,然而对于对称势的改变非常灵敏 。 4)  symmetry potential 对称势 1. Effects of the symmetry potential U sym and the isospin dependence of in-medium nucleon-nucleon cross section N n( N p) on the number of neutron (proton) emitted as well as their dependence on the momentum dependent interaction (MDI) are studied within an isospin dependent Quantum Molecular Dynamics (IQMD) model. 计算结果表明在有动量相关作用条件下 ,在很宽的能量和碰撞参数范围内 ,缺中子碰撞系统的中子 (质子 )发射数强烈地依赖于同位旋相关的核子 -核子碰撞截面 ,而较弱地依赖于对称势 。 2. A detail study indicates that the difference between the nuclear stoppings coming from the isospin dependence of the mean field (symmetry potential) and the isospin independence of the mean field in the presence of momentum dependence interaction is larger than that without momentum. 利用同位旋相关的量子分子动力学 ,通过原子核阻止研究了中能重离子碰撞中动量相关作用对于同位旋相关的平均场 (对称势 )的重要性 。 3. The calculated results show that the degree of isospin fractionation depends sensitively on the symmetry potential and wea. 在丰中子的碰撞系统中同位旋分馏强度敏感地依赖于对称势 ,而对于两体碰撞的同位旋效应并不敏感 ,但对于缺中子的碰撞系统 ,同位旋分馏强度对于对称势不敏感 ,同时发现动量相关作用对于同位旋分馏过程的作用不明显 。 5)  spherically symmetric potential 球对称势 6)  Asymmetrical Eckart barrier 不对称Eckart势 补充资料：对称与非对称 反映客观事物在结构、功能、时空上的特殊联系的范畴。对称指事物以一定的中介进行某种变化时出现的不变性，非对称指事物以一定的中介进行某种变化时出现的可变性。在自然界中普遍存在，形式多样。对称有空间对称(包括形象对称和结构对称)、时间对称、概念对称等。 说明：补充资料仅用于学习参考，请勿用于其它任何用途。 参考词条 ©2011 dictall.com