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For instance, as temperature decreasing, the Peierls transition will take place in one-dimensional (1D) conductor, at which supperlattice, charge density wave and spin density wave occur.

比如，一维导体是不稳定的，温度降低时会发生Peierls相变，出现超晶格和电荷密度波或自旋密度波，材料成为半导体或绝缘体。

Based on them, we calculated precisely some enegy levels of P-wave and D-wave of a helium atom, presented and proved the general interdimensional degeneracies for a quantum N-body system, derived the general spherical spinor functions and the exact solution to the Dirac equation for the hydrogen atom, and proved uniformly the Levinson theorem for the Dirac equation in D-dimensions.

在此基础上，我们精确计算了氦原子P波和D波若干较低能级，建立和证明了量子N体系统不同维数状态间最普遍的简并，推导出任意 D 维空间广义球旋函数和Dirac方程氢原子的精确解，统一地提出和证明了任意 D维空间Dirac方程Levinson定理的一般形式。

In the square wave current welding,the inductance is very important to influence the fomation of square wave A.

在方波交流焊中，电抗器的电感量对方波的形成及电弧的稳定性有着很大的影响。

In our daily lives, and some research, sine and square wave, triangular wave is commonly used basic test signals.

摘要：在我们日常生活中，以及一些科学研究中，正弦波和方波、三角波是常用的基本测试信号。

Deng Xiaoping's southern tour concise summary of his speech the previous stage of reform and opening up of China's achievements, and noted that the next stage of reform and the direction of depth, more than 20 years of China's reform and opening-up is divided into two phases before and after, in that previous throughout the 80's, is China's first wave of reform; Since then, until 2001, China's economic development is the second wave.

邓小平的南巡讲话简明扼要的总结了前一阶段我国改革开放的所取得的成就，并且指出了下一阶段深入改革的方向，把中国20余年的改革开放划分为前后两个阶段，在那以前的整个80年代，是中国改革的第一次浪潮；从那以后，直到2001年，是中国经济发展的第二次浪潮。

Every dinner time, the women's dormitory downstairs wave and standing wave is always waiting for the boys.

每到晚饭的时候，女生宿舍楼下总是一拨又一拨站着等候的男生。

In this paper, a clock network coupled by 1/2 wave length standing wave oscillator, based on CMOS technology, is designed.

在这篇论文中，我们将设计一个基于CMOS工艺的二分之一波长驻波振荡器耦合而成的驻波时钟分布网络。

Week 6 Standing wave equation, quantitative analysis of standing wave quality, source of light and interference source of light.

第6周 驻波的波动方程；驻波特性定量分析；光源和相干光源。

The approximate solution to FPK equation isobtained. The joint probability density function and stationary mean out-crossing rateare investigated for ship nonlinear rolling subjected to additive white noise excitation.Melnikov function and phase space flux are applied to analyze highly nonlinear rolland capsizing of ships in the random seas. The variation of phase space flux withrespect to the characteristic wave period, significant wave height and damping ofships is studied.

求FPK方程近似解，研究白噪声激励下船舶非线性横摇运动的联合概率密度函数及稳定期望穿阈率，应用Melnikov函数和相空间转移率研究船舶在随机波浪中的强非线性横摇运动及其倾覆问题，考虑波浪特征周期、有义波高及船舶阻尼特性的变化规律，推导了船舶在随机横浪中的极限波高的表达式。

Finally, the radial dispersion of stationary vortex Rossby wave is discussed with wave ray method.

最后用波射线法讨论了定常涡旋罗斯贝波的径向频散。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。