计算公式

The formulae for computing the sectional properties and mass properties of the main girders and the crossbeams were given. Then the dynamic characteristic analysis of two given rigid frame bridges were carried out using this model, the single beam model and the solid model respectively for comparison.

基于剪力柔性梁格理论提出了能够充分考虑薄壁箱梁的自由扭转刚度、约束扭转刚度和转动惯量的三梁式计算模型，推导了模型中各主梁截面特性和质量分布的计算公式，以及横梁刚度特性的计算方法。

In order to study the change of the thickness of gas hydrate stable zone and its effect on environment, 35 spots from four key areas in the southern South China Sea were selected to calculate it based on relative equation and program.

为了研究南海南部天然气水合物稳定带厚度在这个过程中的变化情况及其对环境的影响，我们利用相关的计算公式，并编制了计算稳定带厚度的程序，在南海南部的南沙海槽、曾母盆地、巴拉望盆地和苏禄海等四个重点海域选取了35个点进行末次盛冰期及目前稳定带厚度的计算。

Based on dynamic analysis, this thesis suggests a simplified formulas which can be used to estimate the displacement of base-isolation system for the design of the superstruture and the isolators.

本文根据对基础隔震体系的动力反应分析，建议了用以设计上部结构和隔震垫的计算基础隔震体系位移的简化计算方法，并且给出了简化计算公式的适用条件。

By combined calculation with drawing, a design method of tooth profile of rough milling cutter for straight bevel gears is introduced.

介绍了一种计算与作图相结合的直齿锥齿轮粗铣刀齿形设计方法，推导了精确计算公式，详述了计算步骤和计算机作图方法，并给出了设计实例。

Both are simplified as an equivalent frame-shear wall structure with multiple link bars.

文中采用简化为等代框架-剪力墙的多连杆计算图式，给出在顶端集中、均布、倒三角分布的水平荷载作用下内力、位移的计算公式；并对十二层以下的板柱-剪力墙结构，编制出内力位移计算用表。

According to the principles of tooth meshing and manufacturing helicoi ds, a mathematics model is constructed to reflect the manufacture process of nut , and the formula of the grinding wheel section is developed. The parameters of the section are obtained through numeral arithmetic; moreover the parameters of the dresser are worked out. Based on these work, the solid model of the ball scr ew nut, grinding wheel and tooth dresser are developed in the Pro/E software, wh at's more, the process of the dressing...

根据螺旋面加工原理、齿形啮合原理及回转面砂轮加工螺母工艺建立了相应的数学模型，并推导出砂轮截形的计算公式；采用数值计算方法求解砂轮截形参数，进一步得到修整器靠模板的参数；在此基础上，利用Pro/E软件对大导程滚珠丝杠螺母、砂轮和砂轮修整器进行了实体建模，并对砂轮的修整过程和螺母的加工过程进行了运动仿真，有效地验证了砂轮截形的计算结果。

The distributions of stresses and strains on the section of strengthened beam are analyzed. The different formulas for the calculation of internal forces of section are deduced according to the different development stages of strain and a flow diagram for the calculation is established. With the program based on the diagram, the internal forces and some relevant parameters of the strengthened beams are calculated and the main factors which affect the ultimate bearing capacity of the beams are discussed.

分析中，着重研究了加固梁的截面应力、应变分布特点及可能出现的变化情况，给出了截面应力合力的计算公式并给出了计算框图，依据框图编程对影响加固梁正截面承载力的相关变化参量进行了计算分析并对影响极限承载力的主要因素进行了分析讨论。

In this model, the noise field in sound shadow region is deduced by applying Huygens-Fresnel principle. It provides a new ideal for deducing the diffraction sound of complicated noise source.

模型中对声影区的声场分布采用惠更斯-菲涅耳原理进行推导计算，给出的理论计算公式可为推导计算其它复杂声源的衍射声提供借鉴。

On the basic assumption of WENCAL,using pre parameter method,the equation calculating multi element beam of different section and elasticity modulus on different groundsill are given in this paper. The programming language is QBASIC.

依据文克尔基本假定，利用初参数法推导出不同地基及不同地基梁截面弹性模量的多单元弹性地基梁计算公式，并用已编制的 QBASIC语言计算程序，通过实例计算，结果正确、合理。

On the basic assumption of WENCAL,using pre-param eter method,the equation calculating multi-element beam of different section and ela sticity modulus on different groundsill are given in this paper.The programming language is QBASIC.The results of example show that the calculation is correct and reasonable.

文摘：依据文克尔基本假定，利用初参数法推导出不同地基及不同地基梁截面弹性模量的多单元弹性地基梁计算公式，并用已编制的QBASIC语言计算程序，通过实例计算，结果正确、合理。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。