螺旋面

Based on the logarithmic spiral failure surface and combined with the characteristic line throry,a new computational method is proposed and procedure is prepared.

考虑对数螺旋线的破坏面并结合特征线理论，提出了一种新的浅埋条形板极限上拔力的计算方法并编制了程序。

Space ; Cartesian coordinates ; non-Cartesian coordinates ; metric tensor ; natural base ; physicalbase ; helical ; parabolic cylindrical

空间；笛卡儿坐标系；非笛卡儿坐标系；度量张量；自然基；物理基；螺旋线；抛物柱面

Complicated system ; space metric tensor ; natural base ; physical base ; non-Cartesian tensor ; Cartesian tensor ; helical-Cartesian coordinate system ; parabolic cylindrical coordinate system

复杂系统；空间度量张量；自然基物理基；笛卡儿张量；非笛卡儿；张量；螺旋线——笛卡儿坐标系；抛物柱面坐标系

Things like spiral millerite crystals, Sweet Home Mine rhodochrosite rhombs with moving bubble inclusions, or minerals like rutile, pyrite, and boulangerite in ring crystals, to name a very few of the bizarre things seen by the micromounter.

古怪的矿物特性---微矿玩家經常遇到一些古怪事物，例如呈螺旋狀的 millerite 晶体。sweet home mine 菱锰矿的匕泡內含物，或者戒面石內的金紅石、黃铁矿及硫锑铅矿等。

This paper begin with a review of curves and surfces modeling, then we discuss the parametric polynomial minimal surface. This is followed by a discussion of the representations of catenoids and helicoids. Next, we discuss the numeric approximations to the minimal surfaces with piecewise polygons and B-Spline surfaces.

全文安排如下首先，我们简要回顾曲面造型历史和发展现状在第二和第三章，讨论参数多项式极小曲面；在第四章讨论悬链面和螺旋面的表示；在第五章讨论极小曲面的分片线性逼近；在第六章讨论极小曲面的B-样条逼近；最后，我们对全文做简单的总结。

The formation mechanism of the screw structures on the surfaces of polytype crystals is discussed according to the theoretical model of anionic coordination polyhedron growth units.

本文用负离子配位多面体生长基元理论模型讨论了多型性晶体表面螺旋结构的形成，提出在多型性晶体中配位多面体呈层状分布，配位多面体的面为层的边界，上、下层负离子配位多面体不是呈镜象对称的，在三方晶系和六方晶系的晶体中是沿晶轴a、b错开，上、下两层负离子配位多面体体呈交叉对应，从而达到稳定平衡。

The research can solve the problem of the three-dimension cylinder design such as screw thread, gear wheel, and screw cap.

本研究主要用于解决三维柱面设计中经常会遇到螺纹的设计、齿轮的设计、螺旋槽的等设计问题。

The Detect Technology of Contact Zone for Spiral Bevel Gear Based on Digital Image.

基于数字图象的螺旋锥齿轮齿面接触检测技术

There is an obvious disparity between our nation and other developed nations in the field of hard surface finish machining of the spiral bevel gear.

在螺旋锥齿轮硬齿面精加工这一环节上，我国与发达国家的差距尤为明显。

The accurate measurement of the structure parameters of real tooth surface of spiral bevel gear with the coordinate measuring machine is the key to evaluate the geometric quality of the real tooth surface quantificationally, and the base of machine-settings correction.

在三坐标测量机上精确测量螺旋锥齿轮真实齿面的结构参数是定量评价其齿面几何质量的关键，是齿轮加工机床参数修正的基础。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失