特征曲线

To satisfy the requirements of fast producing,low cost manufacture and large thickness preforming in the field of non-resin winding cylinder composite,the equation of retracing cosine curve was deduced based on the section principle.

为使复合材料圆柱壳体预制件适应短周期快速生产、低成本、壳体厚壁成型的要求，基于缠绕区段划分原理推导出端部余弦折回曲线方程，并结合传统纺织理论，推导了余弦折回曲线模型下端部特征参数计算公式。

In many applications, it is desirable to analyze the parametric curves for undesirable features like cusps and inflection points.

为了便于对参数曲线段的形状控制和几何特征的进一步认识，在许多的实际应用中，需要分析参数曲线段上有无多余拐点和奇点，如果有就要消除它。

Archie's electrical parameters of complex pore texture in sandstone reservoir.;2. Based on methods of core analyses,petrographic images,capillary pressure curves and T2 relaxation time curves of nuclear magnetic resonance,the microscopic characteristics of pore texture and evaluation for the Fu-Yang oil reservoirs are comprehensively studied.

根据岩心、岩石图像、毛细管压力曲线分析和核磁共振测量T2弛豫时间曲线等方法，对三肇地区白垩系泉头组扶、杨油层低渗透储集层的孔隙结构进行评价及综合研究，讨论3个问题：(1)储层中孔隙度和渗透率的关系；(2)孔隙结构的微观特征及其对渗透率的影响；(3)储层的渗滤能力、可动流体饱和度及储层评价。

Based on the garment design with the meshes, we assort spline curve into two types, that is to raisene idea that the ring and characteristic line are the basic geometry elements of three-dimensional garment model.

从人体服装设计所用曲面出发，通过对样条曲线进行分类，提出将环和特征线作为人体服装三维建模最基本的几何元素，并详细介绍了利用双线性插值法对人体服装中的两类子曲面进行三维建模的方法，从而在将参数化方法运用到高层次图素如样条曲线、曲面等方面作了尝试和推广

At last, using the dual-porosity model, which is provided by LOGES logging interpretation system, two parameters of gas saturation and irreducible water saturation are used to help identify the doubtful pays with low resistance.

首先校正测井仪器或测井环境对曲线质量的影响，在此基础上进行标准化处理；然后通过&四性&关系研究，考虑到涩北气田储层欠压实等影响，采用补偿密度—电阻率交会的方法来编制气层解释图版，先对曲线进行一次解释，将易于识别的测井响应特征明显的气层剔除出来，然后对低阻可疑气层进行二次定量识别；最后，借助于LOGES测井解释系统提出的双孔隙度模型，利用可动水饱和度和地层水含气饱和度相结合建立新的测井解释标准，进而准确识别低阻可疑气层。

The approach preserves linear of perimeters of curves blending sequences, and it fits general curves blending and skeleton moving.

该方法在曲线形状渐变序列中具有保周长的线性变化，适合一般曲线的渐变和骨架行走的特征。

The results show that the logic function characters the nonlinear Phillips curve and the transition takes place at lag eight periods.

本文应用非线性阈值协整对我国菲利普斯曲线及其在经济周期不同阶段的机制转移进行研究，结果表明我国菲利普斯曲线具有显著的非线性特征，并且非线性转换是由逻辑函数刻画的，转换的位置发生在产出缺口的滞后8个季度。

Based on the analysis of working process of ejection gun of rocket ejection seat ,the physical and mathematical models of interior ballistics of ejection gun were established and the interior ballistics parameters of a rocket eject seat were validated by test and calculation.

在分析火箭弹射座椅弹射动力系统的工作过程的基础上，建立了其内弹道的物理模型和数学模型，并对某型火箭弹射座椅弹射动力系统内弹道进行了试验验证与计算，试验所测膛内气体压力随时间变化曲线与计算曲线基本吻合，弹射过程最大压力pm、工作时间tg、出口压力pg和出口速度vg分别为24.20(24.57)MPa，157(155)×10-3s，22.27(21.83)MPa，16.61(16.59)m.s-1，各特征参数的计算值最大误差小于3%。

The fractal dimension can represent the complexity and the non-linear property of frost heave curve, which is important for understanding the process of frost heave on the aeolian soil.

分维体现了冻胀曲线的复杂性及非线性特征，这对进一步认识风积土的冻胀过程有着很重要的作用。关键词一维封闭冻结，风积土，冻胀曲线，分形

In addition, many studies of patients with AVN showed plenty of special characteristics,such as age distribution and bone quality.Objective:To study the geometric features of proximal femur for the Chinese AVN population,in order to prove the existence of special characteristic of proximal femur for the disease and then develop an AVN-specialized stem evaluated by a validated finite element analysis.Methods:1.The author investigated the standard X-ray data of 127 cases(179 hips) with definite diagnosis of AVN to provide anatomical references for this disease.At the same time,we conducted a meta-analysis of anatomical studies of normal proximal femur data,including the section of LT+20,LT,LT-20 and CFI to identify the potential difference between AVN and normal population.

方法1、通过研究AVN患者标准X线正、侧位片127例(179髋)，获得股骨近端的解剖学数据，利用荟萃分析的方法比较AVN患者股骨近段髓腔特征平面(LT+20，LT，LT-20)及CFI的改变与以往研究数据的差异，并利用创伤性FNF患者资料代替正常人股骨数据进一步比较髓腔前、后、内、外四条曲线段上的差异。2、通过结合现代CAD技术，将内、外、前、后曲线拟合到AVN柄的外形上，选用短柄假体设计，近段设计利用AVN患者骨髓腔CT相对应位置的断面进行修正，设计AVN人工股骨柄。3、计算机三维有限元分析：①使用CAD软件SolidWorks和有限元软件Ansys所建立的髋关节股骨侧假体置换后的三维有限元模型。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。