查询词典 variation method

Fluorescent decay temperature measurement principle was used to measure the temperature,for improving the performance of this kind of method as it has not yet reach the theoretical predict,an optimization method of enhancing the performance was brought forward,which including:(1) The trend of non-exponential variation of the actual fluorescent decay curve is the main factor leading to the result that the temperature measurement performance is not as good as describe by theoretical predict.

这一发现可用来开发高性能的荧光余辉测温装置；(2)提出截断归一化方法，通过图解和计算，得到荧光余辉非指数倾向程度的量化指标，用来优选荧光材料；(3)提出优化荧光余辉测温装置的设计概念，即物理现实、数学模型及数据处理方法要尽可能匹配，才能有效的提高装置测温性能；(4)仿真与实验验证了上述理论与方法的有效性。

The calculation of relative variation of the negative feedback amplifier by differential method results in some errors under certain condition, so there was certain limitation in this method.

摘要利用求微分的方法计算负反馈放大器增益的相对变化量，由于在一定的条件下计算出的结果存在一定误差，因而使用这种方法具有一定的局限性。

Specifically, there are three kinds:(1) constant variation method to track two-body problem the root number of variables to establish perturbed equation;(2) coordinate perturbation method in order to track objects in real position and the location of an intermediate orbit perturbation differential equation as a variable to establish;(3) transformation theory, through a series of canonical transformation to reduce the order of the equations of motion to make it a more simple form.

具体做法有三种：（1）常数变异法，以二体问题轨道根数为变量建立摄动方程；（2）坐标摄动法，以天体在实际轨道上的位置与某一中间轨道上的位置差作为变量建立摄动方程；（3）变换理论，通过一系列正则变换，降低运动方程的阶数，使其具有更简单的形式。

Based on a profound study of the variation law of phase difference between two periodic signals and the ordinary frequency measurement method, this paper presents a new method for comparing frequency standards, which is based on the Lissajous figure.

用传统的李沙育图形法是不能完成对高精度频标比对的，但将等效鉴相频率这一新概念引进，可以使得本来不能完成的高精度频率标准的比对变为可能。

In this scheme weak voltage area are determined by the network sensitivity index method; Considering the relation between low voltage level and voltage collapse, it is put forward that the voltage magnitude variation rate is taken as the observed information for the grouping of weak voltage buses and weak voltage grouping are given; Taking geographic factors into consideration, a fuzzy maximal tree is established to group the weak voltage buses. The method to measure the incomplete observability of buses and the flow chart of PMU configuration are given.

应用网损灵敏度法来判断电压崩溃临界点和电压薄弱区域；考虑低电压水平与电压崩溃的关系，提出将电压幅值变化率作为电压薄弱母线分群所观察的信息，并且给出了电压薄弱分群指标，兼顾地域因素，采用模糊最大树聚类法将电压薄弱母线分群；给出了母线非完全可观测程度的度量方法以及 PMU 的配置流程。

At the condition of high spacial frequency, the principle and methods of image blind deconvolution has been studied, and the method of regularization image blind deconvolution based total variation has been used in the restoration problem of the 1-D bar code signals. The problem of blurring and interaction of bar signals under convolution with the SPF was solved with the method.

研究了图像盲目反降晰的基本原理与方法，并将基于总变分的正则化盲目图像反降晰方法应用到我们的一维条码信号的复原问题中，很好地解决了高空间频率条件下因光学系统点扩散函数带来的信号降晰及边缘混叠问题。

For the generation of hull form, the mathematic principle of DMSL method is exploited and the contours are designed in detail. Based on Michell integral and the development of wave making resistance theory, a variation method is proposed to connect the hull form with WMR.

然后在概述了兴波阻力理论发展的基础上，推导出了基于Michell积分的兴波阻力对于容许曲面的变分，从而将线型的变化与波阻的变化联系起来，为设计提供了有力的参考。

The analytic method of new miticide F1050 was studied in this paper. The method of HPLC was good for the determination of F1050.The relative coefficient, variation coefficient and recovery were 0.9999, 0.20－0.24%, 99.24－99.83% respectively.

研究了新杀螨剂 F1050的分析方法，采用高效液相色谱法分析F1050原药及15%乳油，分离完全，回归方程的相关系数为0.9999，方法的变异系数为0.20%－0.24%，回收率为99.24%－99.83%，结果较满意。

In the meantime, a new relation between the coefficient of variation for a normal variate and its sample size is achieved, where the probability to make mistake Ⅱ is considered 5 The probability distribution of fatigue strength at given life under large sample size determined by a new method is found to follow the log-normal distribution and normal distribution, and a new method are developed to estimate the characteristic parameters of probability distribution of fatigue strength from the probability distribution of traditional tensile properties.

根据P-S-N曲线的要求，采用概率统计方法，导出了考虑犯Ⅱ类错误的概率时获取给定精度P-S-N曲线所需的最少子样容量，引入了不同方法获取的P-S-N曲线结果是否趋同的判别标准，得到了P-S-N曲线的寿命求解法和系数求解法获得趋同结果的条件。 5）研究了大子样条件下指定寿命时疲劳强度的概率分布，并提出了根据拉伸性能的分布估算材料疲劳强度概率分布参数的一种方法。

The objective of this study is aimed at the implementation of parallelized numerical quadrature routines. The algorithm we choose for numerical quadrature routines is the so called "Adaptive Romberg Tree integration scheme"(abbr."ARTint") proposed by Lin et. al.[1997]. This numerical quadrature scheme can arrange the function evaluation points adaptively in accordance with characteristic of the trend of variation in integrand function values. When the accuracy of the numerical quadrature value is requested to be increased, a newer and larger set of function evaluation points must be incurred. The main advantage of ARTint method is the inclusion of all function evaluation points used in previous stages. It is this feature of ARTint method that makes it a quadratue scheme with prominent computation efficiency.

本研究在探讨数值积分程式之平行化，所使用的演算法为林聪悟与林佳慧[1997]一书所提出的「Romberg树自动布点数值积分」架构，此一数值积分方法能以适应被积函数值变化情形方式自动安排积分点来进行数值求积计算，在提高阶数以获得更高精度积分值的过程中，此一方法只须再计算新增加积分点的函数值，搭配先前已计算过的函数值的重覆运用即可获得更精确的数值积分估计值，如此将能减少升阶过程中函数求值计算的次数，有效率地完成单重积分的数值计算。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。