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On the base of the hydraulic impulse testing machine model, calculate the pipeline system and other hydraulic accessories' influence on the impulse press.

首先对液压脉冲试验台的压力冲击—水锤进行探讨，了解管道系统压力冲击过程中瞬态流量和压力的变化规律。

Gas Production Engineering Research Institute,Southwest China Oil Gas field Company,Guanghan 618300,China）Abstract: Basic principle of time of flight diffraction method was described. Two scan modes D scan and B scan were discussed and the phase characteristic of oscillogram and grey-scale map was also studied. Formula to calculate the location and size of defects was given. The image analysis was carried on three typical defects on standard blocks.

摘 要：描述了超声波衍射时差法的基本原理，讨论了平行扫查和非平行扫查两种扫查方式，研究了波形图和灰度图两种缺陷图谱的相位特征，推导了缺陷精确定位定量的计算公式，并通过标准试块试验对三种典型缺陷进行了图谱分析。

With differential geometry knowledge, the local characters of the blade surface are analyzed. Based on researching the cylindrical cutters osculating location, the methods to calculate the osculating location of the conic cutter and the torus cutter are discussed. A method of tool path planning based on the second order osculating method is preferred.

利用微分几何学知识，分析了螺旋桨桨叶曲面的局部特征，在研究圆柱刀二阶密切法规划刀位的基础上，探讨了圆锥刀和圆环刀的二阶密切刀位计算方法，采用二阶密切法规划刀位可以显著地提高加工精度。

A numerical model based on nonlinear shallow water equations and finite volume method is developed, which can calculate the overtopping discharge of oblique and multidirectional wave on sloping seawall.

本文以非线性浅水方程为基本公式，有限体积法为数值方法建立了可以计算斜向和多向不规则波在斜坡堤上越浪量的数值模型。

This paper also describes the form and application of particular integral tables obtained on a digital computer and discusses how to calculate frequency response characteristics on an a.c.

本文对利用电子计算机编制的特殊积分表的形式和用法，以及利用交流计算台求解频率特性曲线的具体方法，均作了分析介绍。

Through obtaining anonymous users' browsing path set, on the basis of the new definition of path similarity, building the users' browsing path similarity matrix, and based on this, designing anonymous users' browsing path clustering algorithm to obtain the clustering result set and calculate various cluster centers, the typical anonymous users' browsing path was got.

通过获取的匿名用户浏览路径集，依据新的路径相似度定义，建立用户浏览路径相似度矩阵，并在此基础上设计实现了匿名用户浏览路径聚类算法，获得聚类结果集，并计算各类的中心，得到典型匿名用户路径。

Calculate descent rate of Scr,phosphonium,β_2-MG and URR,KT/V. Record heart rate,respiratory rate and blood presseure before and after on-line HDF treatment, body tempreature before and after on-line HDF treatment.

计算URR、Kt//V值和肌酐下降率；记录治疗前后患者的心率、血压、呼吸及体温的改变，观察和记录临床症状的改变。

The scene dubs in music is very pleasant to hear, cello's low and deep, violin's plaintiveness, lets the age which the human enters that to remember past times, that Chinese dress is all the rage the age, may say, puts on the Chinese dress only then to calculate is a woman, NONO also thought that perhaps one day such will put on one time, beautifully matter!

现场的配乐很好听，大提琴的低沉，小提琴的哀怨，让人进入那怀旧的年代，那个旗袍风靡的年代，可以说，一个穿上旗袍才算做个一个女人，NONO也想，或许有一天会这样的穿一次，多美地事啊！

This subject combines the basic principle of the calculus of variation and and reply and change basic theories of the function according to fracture mechanics, use mechanics, mathematics knowledge to set up corresponding mathematical model, derive out a series of mechanics and mathematics theory formula, work out procedure carry on number value calculate, to include edge crackle round stress intensity factor of component go on, ask, solve.

本课题结合变分法的基本原理并根据断裂力学和复变函数的基本理论，运用力学、数学知识建立相应的数学模型，推导出一系列的力学及数学理论公式，编制程序进行数值计算，对含边缘裂纹圆形构件的应力强度因子进行求解。

We calculate the energy-momentum pseudo-tensor of relic gravitational wave of both the polarized states by Riazuelo-Uzan expression of the energy-momentum pseudo tensor in the Cartesian coordinates, we can see that energy density and momentum densities of relic GWs are dependent on cosmic scale factor and square of the amplitudes,. At the same time, the energy density of relic GWs is positive definite, the momentum densities components have reasonable physical behavior,and their values are independent on the directions.

我们还用Riazuelo-Uzan表述在直角坐标系下对双极化态的遗迹引力波的能量动量赝张量进行计算，发现双极化态的遗迹引力波的能量张量密度与他们的振幅的平方和宇宙学尺度因子有关，他们的能量密度是正定的，大小跟传播方向无关，即遗迹引力波在宇宙学尺度上是各项均匀同性的。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。