要求高精度的

Compared to perturbation method, the influences of many factors on voltage stability margin are considered and Hessian matrix of control parameters is not necessarily calculated. The method has high calculation speed and accuracy.

相对于摄动方法而言，该方法将各种因素对于电压稳定域的影响考虑在内，且不需要求取控制参数的海森矩阵，具有计算速度快、精度高的特点。

The interferometer is not only used in measuring linear displacement and linear velocity, but also in measuring small angles, form and position errors.

随着世界工业的迅猛发展，人们对位移测量、定位、标定的精度和测量速度提出愈来愈高的要求。

In the architecture, health, film and television industries, luminance measurements are very common, all of these demand measurement of high precision.

在建筑、影视和医疗卫生等行业中，照度的测量是很常见的，而且要求测量的精度很高。

To develop noncontact displacement measuring system with high accuracy and high speed is the main tendency.

随着世界工业的迅猛发展，人们对位移测量、定位、标定的精度和测量速度提出愈来愈高的要求。

According to the chicking equipment for volt-monitor need to build up a standard clock,in order to achieve the request that the instrument carry on time accurate checking to the volt-monitor,this text introduced principle of the oscular clock chip PCF8583 with I2C bus,put forward to make use of the DS32KHz to provide the high stable frequency signal for PCF8583, thus carried out the project of the standard clock, and the interface design of PCF8583 with MCS51 is presented.

根据电压监测仪校验装置需要建立一个标准时钟，对电压监测统计仪进行时间精度校正的要求，介绍了I2C总线接口时钟芯片PCF8583的基本原理，提出了利用DS32KHz给PCF8583提供高稳定度频率信号，从而实现了标准时钟的方案，并给出了PCF8583与MCS51单片机接口设计。

With the development of space technology, much higher requirement for the point of precision guidance of re-entry vehicle is put forward.

随着航天技术的发展，对再入体的落点精度有了更高的要求。

And can be cut, and a variety of materials, precision cutting demanding the ability to use pulse laser cutting die computer printer and the computer automatically scimitar machine, can be used in cutting die plus scimitar machine cutlasses, fast, and accurate.

并可切割多种材料，而且，对精度要求较高的切割，还可采用脉冲切割将激光模切版的电脑绘图机与电脑自动弯刀机连在一起，可在切割模切版的同时，用弯刀机弯刀，又快捷，又准确。

A dynamic mathematical model for the servo-system is developed, and the influences of the dynamic characteristics of a CNC servo-system on the machining accuracy of crank journals is discussed with the servo-system simplified to a first-order one.

而且，随着汽车产品的更新换代，对曲轴零件的加工精度和表面质量有了更高的要求。

Considering this, it is necessary to adopt a stochastic model to describe an engineering dynamic system.

当对系统研究有较高的精度要求时，充分考虑随机因素的影响就必须用随机模型来描述系统的动态规律。

With the development of modern industry, the process precision of large scale workpiece is highly demanded.

随着现代工业的不断发展，对大型工件的制造精度提出了越来越高的要求。

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