计算公式

By means of uniting geometry with algebra, the arc length, tangent line, cotangent space and curvature of curve in four dimensional space are investigated, and the corresponding calculation formula in each cases are given.

用形数结合的观点研究了四维空间中曲线的弧长、切线、法空间和曲率问题，并给出了其计算公式。

This paper presents a new method——using mean radius of curvature to find the substitutive arc of Archimedes spiral,with which better precision can be obtained and the calculating formulas are very simple.

提出了一种用平均曲率半径法求阿基米德螺旋线的代用圆弧的新方法，其计算公式简单，并可得到较高的精度。

Through the investigation into the inventory and transportation cost of Jinsha pharmacy, the article proposed the calculation formulas of the optimum purchase sum. By using step-by-step planning thoughts, the articled put forward the planning ideas on how to build perfect outlets net in Hunan province. Simultaneously, it optimized

通过对金沙大药房的存货持有成本和运输成本进行研究，提出了金沙大药房的最优药品采购金额的计算公式，运用分层规划思想，给出了金沙大药房在湖南境内如何建立完善的经营网点的规划思路，同时，对金沙大药房市区内药品配送路径进行了优化，得到最短路径，并通过实例予以验证

In this paper, the particle breakage rule and breakage energy are studied during triaxial shearing, on which the associated equation is established.

论文根据堆石料的三轴试验成果，研究了粗粒土三轴剪切过程中的颗粒破碎规律和破碎耗能，提出了相关计算公式。

Through the results from finite-element package, real distributes of shear stresses at the bonded plate/concrete interface are found. According to this, the assumption and the formula are amended.

通过有限元分析方法，得到了外粘钢板与混凝土之间剪应力的分布规律，并据此对外粘钢板与混凝土之间剪应力的分布假定进行了修正，得到了修正的锚固长度计算公式。

We discuss asymptotically best linear unbiased estimators of the Logistic population based on selected order statistics and give the formula of computing the ABLUE, the variance and the covariance of the ABLUE in limit, and properties of the ABLUE, and so on. We give the optimum chosen of spacing which is the ABLUE with maximum asymptotic relative efficiency based on complete sample when selected order statistics number is less than 10, and obtain its maximum asymptotic relative efficiency.

讨论基于Logistic总体Ⅱ型截尾样本的若干个样本分位数的总体分布参数的近似最佳线性无偏估计；给出了该近似最佳线性无偏估计的计算公式，估计方差与协方差的极限表达式及估计量的大样本性质等；给出了全样本，样本分位点个数固定，但不超过10情形下，使上述近似最佳线性无偏估计有最大相对联合估计效率时，样本分位数选取法及最大相对联合估计效率；为大样本情形下，该近似最佳线性无偏估计的应用提供了理论依据。

The clutter is assumed to be of Weibull distribution or characterized by a log-normal distribution. It is presented that a detailed derivation of the formula about asymptotic relative efficiencies of generalized sign test and Mann-Whitney detector are compared with optimum linear parametric detector.

选择韦伯分布和对数正态分布为两种非瑞利杂波模型，推导广义符号和Mann-Whitney检测器相对于最佳线性参量检测器的渐近相对效率的计算公式。

The outer automorphism group of the free product of two syclic groups is constructed, and two exact formulas for calculating its order are established.

具体地构造出两个有限循环群的自由积的外自同构群，并给出了其阶的计算公式。

This paper introduces a recurrence formula for estimating the variances of errors of a sequence forecasted by an autoregression model and gives two examples under both smooth and nonsmooth conditions.

讨论了自回归模型的预测误差的方差估计问题，给出了详细的递推计算公式，并给出了平稳序列与非平稳序列的例子各1个。

In order to improve the measuring accuracy and efficiency, a high accuracy inspecting system for measuring the centroid and centroidal deviation of bullets based on three point method is designed. The working principle, relevant calculation formulae and the measuring equipment for measuring the centroid and centroidal deviation of bullets are presented, and the main factors affecting measuring precision are discussed. Then, a multiple measuring platform with automatic leveling and column structure autorotation of 90° is put forward.

为了提高其测量精度和效率，设计了基于三点法的高精度弹丸质偏心测量系统，介绍了测量原理、计算公式和测量设备，分析了测量误差产生的因素，提出了一种多测试平台和自动调平以及弹体自动旋转90°的设计思想。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。