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To resolve thismodel,one approximate liner first derivative equation is used.An simple caculatemodel is setted up for caculating the motive adjust,and a mathematical equation incaculating the range of pressure motion in the system.Experiment data showe thatthese models have high accurecy.

在此基础上，对分析模型采用一阶微分近似线性化处理，建立了计算动态调节过程的简化计算模型，并以此建立了计算系统压力动态变幅的计算式，试验表明简化模型具有较高的精度。

Combining the definition of CWT and the derivative property of convolution, we constructed a general method to calculate the approximate derivative of signal through CWT by using the first and second derivative of Gaussian function, Haar, and the first derivative of three-order-Spline function as wavelets. As compared with the other approaches of calculating derivative, which include the numerical differentiation, polynomial filters, Fourier transform, and the recently proposed DWT method, fast calculation and simple mathematical operation were remarkable advantages of CWT method. For the signal corrupted by severe noise (Signal-toNoise Ratio=5), the satisfactory results could also obtained via CWT method through appropriately adiusting the dilations.

在此基础上，(1)结合连续小波变换的特点和卷积的微分性质，提出了使用Gaussian函数的一阶和二阶导数，Haar和三次样条函数的一阶导数作为小波函数的连续小波变换计算信号近似导数的一般性方法，与其他导数计算方法(包括数字微分法，多项式滤波法，Fourier变换法和离散小波变换法)相比，本法简单便捷，计算速度快，对于噪声含量较高的信号(S/N为5)，只要适当调节尺度即可获得比较满意的结果。

Then, an approximate formula for the buckling loads is established, which is simple and efficient by means of comparison with the results computed by finite difference.

与有限差分法得到的结果比较，本文推荐公式得到的结果是简便的，精确的。

A simple approximate estimation experiential formula of the mixture of the flammable liquids is then put forward.

对多元混合可燃液体闪点的变化规律进行了研究，提出了一个简便的闪点估算经验式。

Simple approximate estimation experiential formula of the mixture of the flammable liquids is then put forward.

bstract 对多元混合可燃液体闪点的变化规律进行了研究，提出了一个简便的闪点估算经验式。

With the help of optimization and computer the approximate formula under the condition of finite rotation is still further optimized so as to raise its accuracy and to make calculation simple.

从而得到了计算较简单，同时在较大的角度范围内具有较高精度的实用稳像公式。

There is no good method to solve such problems. T method is proposed to solve problems, the method is a simple but quite efficient approximate method.

提出的t方法是一个简单同时又效率很高的近似方法，能够很好地解决这类问题。

This algorithm is simple and easy to realize. Examples showed that the approximation error is small and the approach has good results.

通过具体实例对逼近效果进行演示与分析，结果表明该算法的逼近误差小，效果好。

The polynomial approximation method is also employed to obtain simple formulas for frequency and amplitude correction.

本文利用多项式逼近方法获得了频率和幅值修正的计算公式。

This dissertation first presents a simple introduction of some important basic problems ofoperator approximation theory,and history and research status of wavelet theory.

全文首先介绍了算子逼近理论的一些重要基本问题以及小波理论发展的历史和现状，指明了线性正多项式算子逼近收敛阶的受限性。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。