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LI Fu-ming Jiangbei Machinery Plant, Sichuan Province, according to Centrifuge the conical spiral screw blade of the physical characteristics of the establishment of a constant velocity spiral line equation in polar coordinates.

四川省江北机械厂李福明，根据螺旋卸料离心机的圆锥形螺旋叶片的形体特点，建立了等速螺旋线的极坐标方程式。

In this paper, genetic algorithm is used for the route optimizing of SLMM. The path points and threats position are denoted in the form of polar coordinates, which can shorten the gene code length, speed up the execution of genetic search for fast path generation.

采用遗传算法进行自航水雷航路优化，算法利用极坐标描述威胁位置和航路点，将航路编码由二维缩减至一维，降低了搜索空间，提高了优化效率。

This paper describes an approximate solution, in polar coordinates, to the plane problem of foundation consolidation (suitable for certain boundary conditions), and also provides graphs for calculating the distribution of pore water pressure at any time underneath the strip footing with uniform load.

本文叙述了地基渗透固結平面課題的极坐标近似解法，并提出了条形均布荷重下任何时刻地基內孔隙水压力分布的計算图表，可供在复杂荷重及施荷速率条件下計算孔隙水压力之用。

In development of these programs under cylindrical coordinates, the singularity at the pole and transfer phenomenon across the pole were studied deeply and a numerical method which has made these programs efficient in 3D function was advanced and employed to eliminate the singularity by setting up a special mesh at the pole on the polar plane.

针对炼钢生产钢包吹气搅拌精炼工艺，本论文从开发数值仿真程序入手，分别对吹气搅拌条件下钢包金属熔池体系的流体流动、传热和传质、夹杂物碰撞长大和排除等传输现象进行了数学模型或物理模型研究。

Its 10 grooves are well described by Archimedes'(287 to 212 B.C.) spirals (5, 6) of the form r =*(in polar coordinates, radius r, angle , and constant ).

其10槽有很好的描述了阿基米德( 287至公元前212 ) spirals ( 5 ， 6 )的形式r =*(极坐标，半径r ，角度和常数)。

T understand polar coordinate system; we have to specify the x and y coordinates of the hand.

吨了解极坐标系统，我们必须指定x和y坐标的手。"/页"

This article analyses Foucault pendulum movement through the way of polar coordinates system .

文章用极坐标系分析了付科摆的运动，比常见的用直角坐标系讨论要简单，力学意义更清晰。

In this article some causation of slip and the calculation methods of freely setting station are first discussed,and then combined with the theory of polar coordinates a forecast method through distortion course curve analysis is put forward.

在阐述开挖事故原因的基础上，通过讨论全站仪自由设站的计算方法，并结合极坐标测量空间坐标的原理，提出了应用时空变形过程线分析变形趋势的预测方法，这种方法能够满足基坑安全监测工程的精度要求，并且成本低，速度快，能够为现场安全评估和方案设计提供可靠的数据基础。

In this article some causation of slip and the calculation methods of freely setting station are first discussed, and then combined with the theory of polar coordinates a forecast method through distortion course curve analysis is put forward. The method with its low cost and speediness, can satisfy the precision requirement and provide the base data for safe evaluating and designing.

在阐述开挖事故原因的基础上，通过讨论全站仪自由设站的计算方法，并结合极坐标测量空间坐标的原理，提出了应用时空变形过程线分析变形趋势的预测方法，这种方法能够满足基坑安全监测工程的精度要求，并且成本低，速度快，能够为现场安全评估和方案设计提供可靠的数据基础。

Simple finite difference method is proposed for calculating polarizability of conductors and dielectrics in various shapes in radial and cylindrical coordinates.

bstract：使用简单的有限差分法来计算在圆与圆柱座标系中导体和介电质在不同的形状的可极化性。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐