查询词典 harmonic function

The dispersivity of wave propagation implies that phase velocity of a single harmonic wave is a function of the angle frequency.

本论文基于上述耦合模型，对单轴应变一维情况讨论了非线性饱和-非饱和多孔介质中波传播过程的失稳现象和逸散性。

A key point in Short Time Fourier Transform is the choice of window function. Although rectangle window is regarded as the first choice because it's featured by integral harmonic to filter signals and by DC component, decaying DC component and frequency shift of signals cause great error to rectangle window STFT. In addition, transient signals contain rich information of faults, but the fixed time window of STFT fail to collect these information.

STFT 算法关键问题之一是窗函数的选择，矩形窗以滤除信号整数次谐波和直流分量的特点自然称为首选窗，但衰减直流分量和信号的频率偏移对矩形窗 STFT 造成了很大误差；其次，暂态信号中含有丰富的故障信息，傅立叶变换固定的频窗忽略了这些特征信息。

To solve the ill-posed problem of the super-resolution image regularization reconstruction, an energy function based on p harmonic mapping regularization and super-resolution image observed model was drawn.

针对超分辨率图像重建过程中的正则化约束问题，本文提出采用p调和映射进行正则化重建，根据超分辨率图像观察模型及正则约束，给出相应的能量泛函，并采用动态偏微分方程演化来求解能量泛函。

In this paper, the method of singular Lyapunov function is used to study singular nonlinear systems , the sufficient conditions about its asymptotic stability and the harmonic oscillation theorm for it are given.

本文运用广义李雅普诺夫函数方法研究了一类广义非线性系统，给出了其渐近稳定的判别条件，对相应的周期系统给出了其平稳振荡定理。

Our factory is well known for its simple design, unique practical function ,advanced human engineering technology, natural and super quality materials, and harmonic production of various series office furniture It has introduced advanced mechanical equipment from foreign country and hired a team of our with the changing world and the constant development and expansion of our factory in the fierce market competition.

本厂素以设计清雅，独特实用的功能著称，除运用先进的人体工程学科技，采用自然体质材料，谐和地制造各种不同系列的办公家具之外，同时引进外国先进机械设备，拥有一批高质数管理生产技术人才，从而确保本厂与日新月异的世界同步，在激烈的市场中得以不断发展壮大，我们用心做好每一件产品来回报广大的新老客户。

The input current is analyzed by switching function method and the expression of lower harmonic current is given.

采用开关函数法对网侧的输入电流进行谐波分析，得出输入电流中低次谐波的表达式。

In this scheme, the inverse transfer function of inverter is used as a compensator to obtain stable and satisfy harmonic rejection.

采用了逆变器传递函数的逆函数来获得足够的稳定性和谐波抑制能力。

Firstly, the function sinx that appears in the simple pendulum equation is replaced with a polynomial of degree 3 using Maclaurin series expansion and Chebyshev polynomial approximation. Subsequently, the resulting equation which is a Duffing type equation is approximately solved with combing Newton's method and the harmonic balance method.

首先，利用Maclaurin展开和Chebyshev多项式加速技术将单摆振动方程中的正弦型恢复力用三次多项式近似代替，得到一个Duffing型方程；然后，将牛顿法与谐波平衡法结合起来建立Duffing方程的解析逼近周期及周期解，从而给出单摆振动的解析逼近解。

According to guitarist Manolo Sanlúcar , in this flamenco Phrygian mode, E is the tonic , F would take the harmonic function of dominant , while Am and G assume the functions of subdominant and mediant respectively.

根据吉他家 Manolo Sanlúcar 的说法，在这一弗拉门戈弗利基亚调式中， E 是主音， F 发挥了属音的和声作用，而 Am 和 G 则分别起到了下属音和中音的作用。

Under the conditions of a simple harmonic stress applied on the NLME, its internal friction is a periodic function with respect to time.

数值拟合的结果说明，铁粉热压期间的应变弛豫可以用这两个模型来描述，但用SNLS比用NLKE有更小的误差。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样