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This paper puts forward some practical formulae of measuring the area and arc length of arch form,and analyses the relative error of these formulae.

文章提出弓形面积和弧长计量的实用公式，并分析了该公式的相对误差。

Based on the analysis mentioned above, arc light sensing was introduced into practical welding process systematically and was improved with spectral method for the first time.

在GTAW过程中，建立了弧光信号同弧长的对应关系。

Then, combined with the implementation of Arc Tangent function, FFT algorithm, Differential Positioning algorithm, and telecommunication module, the general proposal of algorithm module implementation is presented, and the design methods of practical algorithm module implementation is proposed, together with instances illustrating the advantage of standard algorithm modules.

接着，论文结合北斗用户机研制工作中开发反正切函数、FFT、广域差分算法、指挥机电文通信模块等算法模块的设计实例，归纳出算法模块实现的通用方案和实用化规范算法模块设计方法，并以若干案例说明搭建规范化算法模块的优势。

Whatever the philosophical arcana of the ield, there are already cases where neurotechnologymay have a practical effect on people's moral development.

无论是怎样的哲学的神秘领域，在那已有案例，神经技术也许有一个特殊的效果对人类的道德发展。

The application of equivalent stress in the optimal design of arch dam gets it having more practical value.

等效应力在优化中的应用使其更具有实际应用价值。

Considered the inside and outside contour line was Archimedes spiral in the cold rolling, the forming law of rectangular cross sectional rings has been studied. And the more precise geometrical models and calculation models have been gained. The researches can be used as a theoretical and experimental foundation for the simulation of ring rolling process. At the same time, the results of theoretical analysis have a good agreement with the results of practical rolling production.

本文在考虑冷轧过程中环件的内外轮廓线均为阿基米德螺线的情况下，对矩形截面环件的轧制成形规律进行了研究，得到了较精确的几何模型和计算模型，为环件轧制过程的模拟提供了理论依据和实验依据，同时理论分析的结果与实际轧制生产过程中的结果有较好的吻合。

This paper introduces a practical computer archive administration system.

本文介绍了一个实用的档案计算机管理系统

Beipeng polymer bonding mortar is developed by using imported raw materials catering for the practical application in China. This product is made of imported gelatine powder, arenaceous quartz, high-quality cement and so on, and by means of pre-mixing and dry mixing.

北鹏聚合物粘结砂浆是采用进口原料开发出的适合中国实际应用的新产品，本产品是由进口胶粉、石英砂、优质水泥等原料通过预混、干拌而成的一种灰色粉末状材料。

ZhongYaHanFeng polymer bonding mortar is developed by using imported raw materials catering for the practical application in China. This product is made of imported gelatine powder, arenaceous quartz, high quality cement etc. and by means of pre-mixing and dry mixing.

中雅汉风聚合物粘接砂浆是采用进口原料开发出的适合中国实际应用的新产品，本产品是由进口胶粉、石英砂、优质水泥等原料通过预混、干拌而成的一种灰色粉末状材料。

The study has provided a theory foundation with which we could study the practical production technology of leaching Ag from argentite in acid thiourea system.

该研究为硫脲法从辉银矿中浸出银的实际生产工艺研究提供相应的理论基础。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。