查询词典 parabolic

Mainly include: automatic, single, double-sided polishing machine, horizontal polishing machine, hydraulic surface polishing machine, hydraulic automatic single, double Grinding, Vertical Grinder Cutlery steak knife grinding machine, such as a total of three categories 18 mechanical grinding parabolic varieties.

主要有：自动单、双面抛光机、横向抛光机、液压曲面抛光机、液压自动单、双面磨刀机、立式刀剪磨床、牛排刀磨齿机等共三大类18个品种的抛磨机械。

In the paper, on the basis of aggregation of previous studies, the development of optical technology and development trends at home and abroad are introduced, the principle of Fresnel lens is summarized. In accordance with its principle, circle equidistant steps Fresnel lens design is described. And on this basis, based on Fresnel design, also based on a continuous upward spiral of the plane curve concept, incidence surface and the backlight is set up to greet Archimedes - Fresnel lens design formula and the Second parabolic type Fresnel lens design formula, and on this basis, the advantages and disadvantages of the three designs is discussed.

本文在充分了解非球面光学技术在国内外的发展状况和趋势的基础上，同时从菲涅尔透镜的光学原理出发，并根据它的工作原理推导了圆环等距菲涅尔透镜的设计步骤，并在此基础上依据菲涅尔的设计思想，同时依据平面曲线的连续又呈螺旋的构思，推导出了迎光面和背光面阿基米德型菲涅尔透镜的设计公式和二次抛物面型菲涅尔透镜的设计公式，并在此基础上讨论了这三种设计各自的优缺点。

In chapter 1, a difference scheme of some two-dimensional linear pseudo-parabolic equation is concerned.

第一章中讨论了二维线性伪抛物型方程的差分格式。

Flow characteristics are linear, parabolic two.

流量特性有直线、抛物线两种。

In elliptic case,the compactness of"convex polyhedrons"is destinedto be true because of the"local Lipschitz continuity of convex functions",whilein parabolic case,we cannot expect convex-monotone functions have such goodproperties as convex functions.

在广义解存在性的证明中，参考椭圆情形由"凸多面体"逼近的思想，我们采用了由一种特殊构造的"凸单调多面体"逼近的途径，但在证明这种凸单调多面体族的紧性时，我们遇到了困难。

This paper analyze the stability of soil-nail wall with limit balanced analytical method, and assume the slip surface, destroy surface as dual fold line, circular arc line, parabolic curve or log spiral curve etc.

本文采用极限平衡分析方法对土钉墙内部稳定性进行了分析，滑动面、破坏面的形状假定为双折线、圆弧线、抛物线或对数螺旋曲线进行了描述。

The caloric functions and parabolic maximal principle s in upper spaces are studied.

研究上半空间的热函数及其抛物极值原理，证明了在边界上为 0的热函数恒等于 0 。

If 〓 is an absolutely continuousmeasure and is represented by a measurable function f on Q,then u is said tobe the generalized solution of(1),and 〓 to be the parabolic Monge-Amperemeasure.

定义1由legendre变换定义了一个Q上的测度〓（4）其中〓为〓空间中的Lebesgue测度，若〓是一个绝对连续测度且在Q上由可测函数〓表示，则称u为方程（1）的广义解、称测度〓为抛物型Monge-Ampère测度。

A sphere mirror was used to replace an off-axial parabolic mirror, and a meniscus lens was introduced to compensate aberrations.

二级折反射系统实现激光束的高倍率扩束，由球面反射镜取代离轴抛物面镜，用一片弯月透镜补偿像差。

Using the method of parabolic regularization, we first study the existence of the optimal control of nondegenerate systems governed bywhereand Jn is mollifying sequence in R.

利用抛物正则化方法，我们首先研究了非退化系统最优控制的存在性，其中而J_n是R上的软化子。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了