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The technology of grinding ball by centrifugal casting, the rotational speed, the method for calculation of ingate area and factors influencing technological process were introduced.

介绍了离心铸造磨球的工艺，以及转速、内浇口断面积计算方法和影响工艺过程的因素。

It is suggested to apply the principle of effective gravity and equivalent pressure head to calculate the rotational speed and ingate area in the processing of grinding ball by centrifugal casting.

在离心铸球工艺中，可应用有效重度和等效压头原理计算转速和内浇口断面积。

As a main large scale programmable specific integrated circuit, FPGA meets the requirements of high speed image processing, with the characteristics of simple algorithm realization, easy programming, good portability and inheritability.

使用FPGA可以充分利用硬件上的并行性，从本质上改善图像处理的速度，使对大数据量的图像处理达到实时性。

His speed, like so many things about him, is inhuman.

他的速度就和关于他的许多事情一样，不是人类可以企及的。

It has inimitable superiority and function on achieving high speed data transfer.

它在减小CMOS芯片内外速度差异、实现高速数据传输方面具有独特的优势和作用。

It Newton iteration is used in the analysis of math value,and the simplicity formula is given to resolve(including original initial value formula and advanced approximation formula),which can be characterized by fast speed and easy remembering.

采用数值分析中的牛顿迭代法求反渐开线函数的根，并给出了符合精度要求的解算反渐开线函数的简单公式(包括原始初值公式和近似值精化公式)，具有迭代收敛速度快、简单易记的优点，它们适用于[0，π/2]的全区段，免除了分段计算的烦恼，并运用VB编写计算机程序，从而实现反渐开线函数快速求根的目的。

The rational initial solution and speed model is commonly used in the iterative method of linear equation.

求解方程组常用的迭代法，需要一个比较合理的初始猜测解，也即是初始速度模型。

In this paper,the inlet condition of core shooting process has been studied with a high-speed digital camera,and the initial velocity of sand flow has been measured.

本文利用高速摄影的方法，对射砂过程的初始条件进行了研究，得到了砂流在射入芯盒时的初速度。

In the case of a flat,an opening\closing degree of the injector 4 becomes different according to the vehicle speed.

在平路的情形下，喷油器4的开放和关闭程度根据车辆的行驶速度而变得不同了。

The balance of the effect of ink on many factors, such as the temperature and humidity, Business card printing and membership card production speed, paper with the texture, Business card printing and membership card making machine performance, etc.

感化火不朱不均的成不合有好多，如不入产车间的温度和湿度、制卡和会员卡制息速率、纸张物性、制卡和会员卡制息机本能机能等。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。