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In this research, we try to find a more practical formula for calculating the impact force of boulders. We infer an academic formula from the elastic collision theory. Then, in the experiments, we simulate the impact by debris flow with mixed diameters in order to correct the result formula. We hope we can provide a reference for future slit dam design and debris flow prevention.

本研究目的为利用弹性体碰撞理论，推求出巨砾冲击力之理论式为基础，藉由实验方式，以混合粒径模拟土石流撞击梳子坝，来修正推算出之冲击力理论式，求得一个更符合实际撞击情形之巨砾冲击力计算式，期能对尔后梳子坝设计及土石流灾害防治问题，提供一设计之参考。

Through calculating it is discovered that there is elastic strain energy concentration near triple junction when loading direction is parallel with triple junction, but the concentration degree is not so high.

因为应变能中包含了所有的应力分量和应变分量，能全面地反映各应力分量对三晶交点应力集中程度的影响。

And this paper also discusses the electro circuit design of distance calculating and the software design.

文中还探讨了超声波测距的电路设计和软件设计。

In this article, according to the structure of Armature which is the core part of an Electrodynamic Vibration Shaker, a three-degree equivalent dynamic model is set up and then the quick calculating formula of the first-order axial harmonic frequency of Armature is educed.

针对电动振动台的核心部件——动圈，根据动圈的结构，建立了动圈的三自由度等效动力学模型，导出了动圈轴向一阶共振点的快算公式。

In recent years, the global construction of information expressway, development of Internet and Intranet, have brought the enormous pushing and impact to accounting profession, accounting by EDP develop from calculating and melting in the early single electromechanics to network accountant of today too, but the network brought a lot of new challenges to accountant at the same time, how to utilize the computer to carry on the work better, guarantee the accountant works and runs in a normal and orderly manner, become the important problem that the accounting profession faces day by day under the network environment.

近年来，全球信息高速公路的建设、Internet和Intranet的发展，给会计行业带来了巨大的推动和冲击，会计电算化也从早期的单机电算化发展到如今的网络会计，但是网络同时也给会计带来了许多新的挑战，如何利用计算机更好地开展工作，确保网络环境下会计工作正常有序地运行，日益成为会计行业所面临的重要问题。

A method of calculating symmetric plane static electric field with elementary interal and simple plural function was given in this paper.

提出了一种仅利用初等积分和简单复变函数运算，求解具有一定对称性的平面静电场的方法。

Finally the spatial distribution figure for electric potential is plotted and analyzed. This method can be used in calculating many similar problems. charged ring ; electric potential ; electric intensity ; elliptic integral

为原点，环轴为z轴，取圆柱坐标系，如图1所示，设尸为环轴外任意一点，下面来求圆环电荷在尸点产生的电位。l「do甲叹r，尹，z夕一二二丁{而一石二竺石万一=，诊L七OJ ql月、—月龟I (1)这个积

According to the requirement of precision diameter measurement of the single crystal silicon sphere, the principle and characteristics of the measuring system were presented, and mathematical models were established for calculating the ellipticity of concentric interference rings with different beam incident angles.

针对标准单晶硅球直径精密测量的需要，本文在介绍标准硅球直径测量系统原理并分析其光路特点的基础上，根据建立的数学模型，对激光束斜入射标准板时产生的椭圆干涉图像进行了分析，并对不同入射角度时干涉环中心点带来的直径测量误差进行了研究。

Based on the above analysis, an improved empirical formula for calculating the penetration resistance is suggested.

在此基础上，提出了改进的计算沉贯阻力的经验公式。

By extracting encrustation of histogram,and calculating partial fuzzy extent around pixels to update the fuzzy roughness.

通过提取直方图的外层，以及计算像素点周围的局部模糊程度来更新粗糙度。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。