以弹性波为重点，评述了三锥散射算子关系及其在逆散射中的应用。为便于理解，在介绍过程中，还仔细描述一维球对称情况下散射矩阵和逆散射方程推导。
The three-dimensional scattering operator formulations with application in the three-dimensional inverse scattering are reviewed with emphasis on the elastic wave case.
当距离锥顶还有三米时，观察员通过无线电告诉他岩浆的活动水平，在哪里爆发，什么时候溢出。
When he was ten feet from the top, spotters described to him over the radio the level of the lava, where it was exploding, where it was spilling over.
火山口中间是火山灰锥，投下了三角形的暗影。
An ash cone rises from the center of the crater, casting a dark triangular shadow.
本文以现场实际经验为基础，重点介绍了轴承座、锥套和衬套这三个油膜轴承中关键件的清洗和检修技术。
Based on worksite practice, the paper introduces Cleaning and Overhaul Technology of the chock, bushing, sleeve which are the key parts in the oil film bearing.
为了了解内喷管间隙宽度对线性塞式喷管性能的影响，提出了对应着同一个内喷管的三种不同间隙宽度的塞锥。
To understand the effects of gap width between nozzles on linear plug nozzles performance, three plugs with different wide gaps were brought forward, which were fixed on the same inner nozzle.
文章结合编程实例介绍了球弧数控车削三种常用的工艺方法，即车圆法、移圆法、车锥法。
This paper introduces three kinds of CNC turning method combined with practical example, concentric circle turning, center shifting turning and taper profile composition turning.
本文探讨了正三角锥晶系的计算方法。
This Paper Researched Calculation Method of Regular Triangular Pyramia.
在一个实施例中，可包括第三收集光学器件414来减小来自第二波长转换元件412的光的锥角。
In one embodiment, a third collection optic 414 May be included to reduce the cone Angle of the light from the second wavelength converting element 412.
本文介绍三种倒锥齿内花键的加工工艺，工艺分析和测量方法。
This paper introduces three method of machining technique, technique analysis and measuring for internal spline with reversed taper teeth.
我们提出了圆加垂直弧段及三棱锥的三棱线这两种新的锥顶轨迹，并研究了以其进行精确重建所需的完全性条件。
In this paper two new cone vertex orbits, which are circle and arc and regular triangular pyramid lines, have been proposed and their complete conditions for exact reconstruction have been obtained.
文中导出了正方排列和正三角梭锥（正四面体）排列两种型式的三维（立体）声系统作为这组公式应用之例。
At last, the cases of three dimensional surrounding sound systems with cube array and triangular pyramid array models by using these formulas are illustrated for example in this paper.
第三章主要用光滑化方法求解二阶锥约束变分不等式。
The third chapter mainly deals with the smooth method for second-order cone constrained variational inequality problems.
论述了螺旋锥齿轮动力学研究的三种主要方法，即加载接触分析（LTCA）、解多维非线性方程组的方法，以及加载接触分析与周向振动模型结合的仿真分析方法。
The first method was loaded tooth contact analysis(LTCA), the second method was to solve nonlinear dynamics equation and the third method is to integrate torsional vibration model with LTCA.
使用三轴数控机床和万能分度头等设备，在锥曲面上刻字的数控加工方法，解决了在实际加工中类似零件对多轴数控机床的依赖问题。
In this paper, we introduce a CNC machining technique of lettering on taper-surface throught adopting the three-axis CNC and multiple axis indexing mechanism and so on.
本文用三维光弹性法分析锥齿轮在扭矩和离心载荷下的应力分布。
The three-dimensional photoelasticity method is used to analyze the stress distribution in the bevel gear under torsional moment and centrifugal load.
在该配合物的晶体中，锡原子呈五配位畸变三角双锥构型。
In the crystals of the complex, the tin atoms are penta-coordinated in a distorted trigonal bipyramidal configuration.
两个锡原子为五配位的三角双锥构型。
The tin atoms are five-coordinated with geometry of distorted trigonal bipyramid.
例如，锥螺纹、梯形螺纹、三角螺纹等。
For instance, awl thread, ladder-shaped thread and triangle thread etc.
内环锡和外环锡原子均为五配位的畸变三角双锥构型。
Both endo-cyclic and exo-cyclic tin atoms are five-coordinated and have coordination geometry of distorted trigonal bipyramid.
用X射线单晶衍射测定了该配合物的晶体结构。结果表明，配合物中锡原子呈五配位畸变三角双锥构型。
The crystal structure was determined by X ray single crystal diffraction, the structure is a distorted triangular bipyramid with five coordinated central tin atom.
前言：基于螺纹测量“三针法”的原理，使用机器视觉的方式，研制开发了三维自动锥螺纹检测系统本体，对图像处理技术中的预处理部分做了简单探讨。
Based on the "three-ball" measurement theory and the machine vision technology, a novel instrument for measuring taper thread is introduced. At the same time, image pre-process technology is analyzed.
计算的物型是具有过渡段的弯头锥模型。本文给出了三种物型的计算结果。
Moreover, several numerical results are given, which show that the method is also successful in this case.
第三章，我们提出了一类基于锥模型的非单调信赖域算法。
In chapter 3, we present a nonmonotonic trust region algorithm based on the conic model.
该系统由闪烁体及鼻锥部分、光学系统和条纹相机系统三部分组成。
The system is composed of plastic scintillator and nose cone, an optical system and streak camera.
对某锥柱形装药固体火箭发动机(SRM)燃烧室和喷管的内流场进行了三维两相一体化计算。
This paper makes a 3-d two-phase flow united calculation of the inner flow field of chamber and nozzle in certain SRM.
针对场致发射阵列建立了有效的三维有限元模型来分析单个尖锥的发射电流。
An effective 3-d finite element model was constructed for the field emission array to analyse the field emission current over a single tip.
该天线由含有背腔结构的盘锥天线、盘锥顶盘与地板之间的短路结构、以及多板天线三个部分复合而成。
The antenna is composed of three antenna parts: the cavity-backed discone antenna, the short-circuited structure between the top plate of the discone and ground, and the multi-plate antenna.
应用此系统可以迅速设计开发出所需要的主减速器圆弧螺旋锥齿轮的基本参数和三维模型。
This system can be developed rapidly design required main reducer arc of spiral bevel gears of 3d model and basic parameters.
配合物(4)中的锡原子为五配位，构成以锡原子为中心扭曲的三角双锥构型。
In the molecular structure of complex (4), Sn atoms are five-coordinated and present the distorted trigonal bipyramidal geometry structures.
配合物(4)中的锡原子为五配位，构成以锡原子为中心扭曲的三角双锥构型。
In the molecular structure of complex (4), Sn atoms are five-coordinated and present the distorted trigonal bipyramidal geometry structures.
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