查询词典 arc cotangent

The arc voltage signal and arc light intensity signal are detected in order to get fault arc reliably.

为可靠地检测出低压配电箱中的故障电弧，分别对电弧电压信号和弧光信号进行了检测。

In addition, The transfer property of arc light in the surrounding atmosphere around the arc column was measured and the distribution of arc light intensity and some characteristic signals was obtained.

另外，对弧焊过程弧光在电弧周围空间的传输进行了检测，获得了弧光强度及一些特征量在电弧周围空间的分布规律。

In this system we developed, according to spectrum of arc light and the relationship between arc, welding current and radiation, corresponding filter system is applied to filter ultraviolet radiation and part of visible light from arc light.

在系统中，鉴于弧光的光谱信息及其与焊接电流及电弧区国辐射之间的关系，采用了相应的滤光系统将强烈的紫外及部分可见光滤除，并将余留的光作为光源，通过CCD摄像机拍摄到了较稳定的近缝区图像。

The results established the applied basis of arc light sensing and complemented the field of welding arc physics of arc light.

在对弧光传感机理进行分析的基础上，首次将这种传感方法系统地应用到焊接过程的传感中，并利用光谱分析结果提高信号质量。

The arc data interpolation error by secant, tangent and chord, and the smallest error by secant mode is analyzed in this paper. The relation between the maximum radial error and arc radius and approach step-length in the secant mode of arc data interpolation in CNC system is detailed.

在分析数控系统圆弧数据插补割线方式较切线、内接弦插补方式误差更小的基础上，讨论了数控系统圆弧数据插补割线方式中最大径向误差与圆弧半径和逼近步长的关系。

On the basis of theoretical analysis to interrupting process in low voltage circuit breaker, a chain arc model is set up for magnetic field driven arc in arc chamber.

本文对低压断路器的开断过程进行了详细的理论分析，提出了一种低压断路器的链式电弧动态数学模型。

ABSTRACT A chain arc model is set up for magnetic field driven arc in arc chamber of low voltage circuit breaker in the paper.

针对低压断路器灭弧室中的磁驱电弧建立了链式电弧数学模型。

The thesis expounds the necessity of application of arc prolong measure in synthetic test,introduces general practices of arc prolong methods and their working principle at home and abroad,and proposes design criteria and parameter calculating method for arc prolong circuit .

论述了合成试验采取延弧措施的必要性，介绍了国内外大功率试验室通用的延弧方法和工作原理，提出了延弧回路的设计原则和参数计算方法，并对影响延弧效能的因素进行了分析，最后叙述了提高延弧成功率的措施以及今后可能出现的问题。

In the same circle or congruent circles, the circumferential angles opposite to the same arc or the equal arc are equal, and equal to half of the central angle opposite to the arc; The arcs opposite to the equal circumferential angles are equal.

在同圆或等圆中，同弧或等弧所对的圆周角相等，都等于该弧所对的圆心角的一半；相等的圆周角所对的弧相等。

Pass to expati at e the characteristics of segment double circular arc gear, introducing the appl ication of segment double circular arc gear in turbine compressor, It presented that segment double circular arc gear in the high speed and large deeply turbi ne compressor was necessary.

通过阐述分阶式双圆弧齿轮传动特点，介绍了分阶式双圆弧齿轮在透平压缩机中的应用，说明在高速、型透平压缩机中采用分阶式双圆弧齿轮是必要的。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。