分析曲线

A length of straight line and a length of undamped sinusoid of 1/4 period replace the envelop as the response. By the new methods, calculation error is greatly reduced and system character analysis is completed with advantage.

新方法使取代曲线由包络线改为与响应曲线非常接近的一段直线和一段1／4周期的不衰减正弦曲线，从而使计算误差大大减小，这将有益于提高系统性能分析的质量。

Of key interest was the trends of corrosion potential on initial period. Corrosion potential–time measurements were undertaken after the samples exposed to the air for 24 h were polarized anodically and cathodically in acetic acid solution. With analyzing of the curves of electrochemical polarization and SEM and EDS data of the samples ,corrosion and electrochemical behavior and mechanism of localized corrosion of 316L stainless steel in acetic acid solution with Cl- were discussed.

测试了空气中钝化24小时后、阴极极化后和阳极极化后，试样在醋酸溶液中自腐蚀电位随时间变化的曲线，结合阴极极化曲线、阳极极化曲线、试样的SEM微观观察和EDS成分分析，初步探讨了316L不锈钢在含Cl-醋酸溶液中的腐蚀电化学行为和点腐蚀发生的机理。

Theory; the spatial meshing theory includes comparative motion, comparative differential and conjugative curved surface; and the application of meshing theory includes gear drive and worm drive. The spatial meshing theory is the main part of the course.

课程的重点讲解内容有曲线的参数方程、切线、法面、弧长、曲率、空间曲线的基本公式、挠率及平面曲线的基本公式等；曲面第一和第二基本公式，法曲率、主方向和主曲率、欧拉公式、短程挠率、欧拉公式和贝特朗公式推广、相对法曲率和相对短程挠率等；刚体的绝对和相对运动速度、相对微分和绝对微分、相对速度和相对微分、轨迹曲面的法曲率和短程挠率等；空间共轭曲面的啮合条件、诱导法曲率、两类界限点、等距共轭曲面、空间啮合的二次接触原理等；蜗杆传动的数学模型建立及啮合特性分析方法等。

As KKД-500 gyratory crusher has large nip angle,linear steep crushing chamber profile,different throughputs of cross sections along the chamber height,it has poor crushing performance and short liner service life.Based on the structural analysis of the original crushing chamber,in the design principle of variable nip angle,the curve equations for moving cone lining and the fixed cone lining were setup by multi-stage fitted curves.

针对KKД-500旋回破碎机大啮角、直线陡锥破碎腔型，沿破碎腔高度各个截面的通过能力不尽相同，其破碎性能差，衬板使用寿命短的情况，在分析原旋回破碎腔型结构的基础上，按照变啮角设计原则，采用多段二次拟合曲线分别建立动锥衬板和定锥衬板曲线方程，利用计算机绘制衬板曲线，确定衬板结构，并优化破碎腔型。

As kkд-500 gyratory crusher has large nip angle,linear steep crushing chamber profile,different throughputs of cross sections along the chamber height,it has poor crushing performance and short liner service life.based on the structural analysis of the original crushing chamber,in the design principle of variable nip angle,the curve equations for moving cone lining and the fixed cone lining were setup by multi-stage fitted curves.lining curves were plotted by computer,the lining structure determined,and the...

针对kkд-500旋回破碎机大啮角、直线陡锥破碎腔型，沿破碎腔高度各个截面的通过能力不尽相同，其破碎性能差，衬板使用寿命短的情况，在分析原旋回破碎腔型结构的基础上，按照变啮角设计原则，采用多段二次拟合曲线分别建立动锥衬板和定锥衬板曲线方程，利用计算机绘制衬板曲线，确定衬板结构，并优化破碎腔型。通过对铝土矿的破碎试验表明，采用新型破碎腔型，其破碎性能和破碎产能显著提高。

So, some researches are present in this paper: 1 In this paper, a finite element model of curved box girder jointless bridges supported on piles is brought forward, considering the interaction between structure and soil.

本文就无伸缩缝曲线箱梁桥剪力滞效应的分析开展了如下的研究： 1、考虑桩土效应，建立无伸缩缝曲线箱梁桥有限元模型，研究在不同荷载下无伸缩缝曲线箱梁桥剪力滞系数的分布规律。

According to AD curve with AS curve nodical decision is real always yield and the general and balanced principle of price total level, be described like can correct ground and analyse each years of AD, the actual mobile contrail of AS curve, will conduce to the settlement of above difficult problem undoubtedly.

根据AD曲线与AS曲线的交点决定真实总产出和价格总水平的一般均衡原理，如能正确地描述和分析各年AD—AS曲线的实际移动轨迹，无疑将有助于以上难题的解决。

The thermal decomposition of tyrosine was studied by the methods of DTA and TG. The molecular geometries of tyrosine, intermediates and the products were optimized by AM1 method. The thermolytic mechanism is put forward through the results of the experiment and the calculation.

用差热曲线、热重曲线法测得了酪氨酸的热解曲线，用AM1方法优化了酪氨酸及其中间产物和产物分子的构型，计算了有关分子的键长和键级，通过对其热解过程的分析及AM1研究的结果，首次提出了酪氨酸的热解机理。

The population dynamic of Tsuga tchekiangensis in Wuyishan Nature Reserve was studied and its age structure, the life table, survival curve, mortality rate and killing power curve were analyzed.

对武夷山自然保护区南方铁杉种群动态进行了系统研究，绘制该种群的年龄结构，编制静态生命表，分析存活曲线、死亡率曲线和损失度曲线。

This paper summarized and analyzed the problems existing in miorolog curves in each inland giant oilfield. It put forward some counter measures of quality control to improve microlog curves.

该文章对国内各大油田微电极测井曲线存在问题进行总结和分析，提出则井曲线质量控制措施，提高微电极测井曲线质量。

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。