简正波具有驻波性质，基本已反映在一阶近似解中。
Indoing SOS the standing wave nature of the solution is emphasized.
二阶近似解析解和数值解的误差比一阶近似解析解和数值解的误差小。
The error between the numerical solution and the two-order approximate analytic solution is smaller than the error between the numerical solution and the one-order approximate analytic solution.
以圆光纤为例，讨论了一阶近似本地场形式及基模场在最大值处的场位移。
Taking the circular fibres for the example, the first order correction local field and field shift in the fundamental mode peak field are discussed.
运用泰勒展开的一阶近似估计推导过定点的指数曲线的非线性直接估计公式。
Nonlinear directly estimating formula for exponential curve which, through fixed point, was derived, by using first order approximation of Taylor expansion.
给出了其在硬激励和软激励情况下的一阶近似解和共振情况下的频率响应方程。
And the first order approximate solution in the cases of hard excitation and soft excitation and the frequency resonance equation in the case of resonance are given.
指出该公式只是一阶近似意义下的公式，并导出二阶近似、三阶近似意义下的公式。
It is pointed out that Peters'equation is just the formula with first order approximation.
本文通过引入两相流区压力和比容之间的一阶近似式，获得该问题的一阶近似积分解。
In the work, an one order approximant for the mapping between the pressure and the specific volume in two phase regime was presented by Taylor series expansion.
Worm博士承认这些数据只是一阶近似，但他认为如果没有什么区别的话，这些数据已经是保守的了。
Dr Worm acknowledges that the figures are "only a first order approximation" but says that if anything they are conservative.
所以我匆忙地写了篇论文，给出一阶近似解并指出至少在这个精确度下，理论和实验结构都相符合。
So I hastily wrote up a paper giving the first order of approximation and showing that to that accuracy, at any rate, we had agreement between the theory and observation.
在工程实际的框架稳定计算中，一般采用计算长度法等一阶近似计算法，由于采用了较多的假设，因此只能进行近似线性计算。
It is usually use first-order method such as effective lengths method in engineering practical stability compute. Because of much hypothesis adopted, so it can only make approximate analysis.
该文采用上述情形的多普勒频率的分段一阶近似模型，在此基础上，提出一种基于推广RELAX算法的线性调频信号参量估计方法。
In this paper, the first order approximate model of Doppler frequency is assumed, and an algorithm based on the extended RELAX method is proposed to estimate the parameters of chirp signals.
数值结果表明：在隐式一阶多项式近似下，对合适的反应性输入能够取得足够精确的结果。
The numerical results show that for reasonable reactivity inputs, a sufficient accuracy can be achieved in first order polynomial approach presented here.
提出用一阶简单边界的上、下界来估计结构系统失效概率的近似公式。
An approximate formula using the lower and upper bound of the first simple bounds for estimate of the failure probability of structural systems is presented in the paper.
隧道通风过程可近似认为是一个一阶时滞系统，系统采用自整定模糊pid对隧道管网的风压进行实时控制。
Tunnel ventilation process is approximately a system of time lag of first order, real time control of wind pressure in tunnel pipe is adopted self-tuning fuzzy PID.
由于供水过程可近似认为是一个一阶时滞系统，系统采用了自整定模糊pid对管网的压力进行实时控制。
The water supply process is approximately a system of time lag of first order, real time control of pressure in pipe is adopted self-tuning fuzzy PID.
试验数据分析表明，测站钟差经一阶多项式拟合后的残差可近似为零均值的测量噪声；
The experiment data analysis results show that the clock residual error of monitor station after fitting by 1st order polynomial is approximately taken as noise with zero mean.
试验数据分析表明，测站钟差经一阶多项式拟合后的残差可近似为零均值的测量噪声；
The experiment data analysis results show that the clock residual error of monitor station after fitting by 1st order polynomial is approximately taken as noise with zero mean.
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