弧

The post-arc fulgurite current of low voltage current limiting fuse is studied. It is show that post-arc fulgurite current varies with breaking current.

对低压限流熔断器中的弧后残躯电流进行了研究，得出弧后残躯电流随开断电流大小变化而变化。

A set of equipment including a special shunt and a special amplifier are made up to measure the post-arc fulgurite current from which the post-arc fulgurite resistance is obtained.

本文通过自制试验设备测量熔断器中弧后残躯电流随时间变化的关系曲线，从而得到不同熔体材料采用不同的填充方法的弧后残躯电阻曲线。

A set of equipment including a special shunt and a special amplifier are made up to measure the post-arc fulgurite current from which the post-arc fulgurite resistance is obtained. Several fuses with different fuse material are used to measure their post-arc fulgurite resistance.

本文通过自制试验设备测量熔断器中弧后残躯电流随时间变化的关系曲线，从而得到不同熔体材料采用不同的填充方法的弧后残躯电阻曲线。

The structures, features, application principles and on-site applications of six kinds of prevention products developed on the basis of above mentioned methods, i.e., the insulation striped arc-protection fitting, clamping post porcelain/ composite insulator, stab-type arc-protection fitting, stab-type clamping post porcelain/composite insulator, ring electrode MOA with external series gap and stab-type electrode MOA with external series gap, are presented.

分析了10 kV配电网绝缘导线雷击断线机理，归纳出"疏导式"和"堵塞式"2种防护思路，介绍了基于2种防护思路研制的剥线型防弧金具、放电箝位柱式瓷/复合绝缘子、穿刺型防弧金具、穿刺型放电箝位柱式瓷/复合绝缘子、环形电极带外串联间隙金属氧化物避雷器和穿刺电极带外串联间隙金属氧化物避雷器6种防护产品的结构、特点、应用原则及现场应用情况。

The voltage with the existence of gassing material, the arc voltage is higher.

试验结果表明，陶土灭弧室的介质恢复强度低，金属栅片灭弧室的介质恢复强度上升较快。

Automatic Programming for NC Machining of Gear Indexing Cam with Smaller Cutter;2. Study on the Technologies of Computer-aided Designing and Programming of Gear Indexing Cam

本文结合弧面分度凸轮加工的工程实际，以微分几何和空间曲面啮合理论为工具，对弧面分度凸轮机构的传动规律、啮合原理和数控加工进行了系统的研究。

It is proved that arc coordinates of a directed curve cannot be used as ordinary coordinates or generalized coordinate s for the motion of an Appell-Hamel particle without a fixed orbit, but they can be used as quasi coordinates.

证明了弧长坐标 s在轨道未知的 Appell- Ham el质点运动中不能作为普通坐标或广义坐标，但可以作为准坐标，指出文献 [1]中引入弧长 s坐标的做法及"Appell- Ham el质点运动的轨迹是一般螺线"的结论是正确的，但其Appell- Ham el约束是完整约束及在该质点运动中 s坐标是广义坐标的观点是错误的。

Then 3D solid modeling and motion animation of globoid indexing cam based on Pro/ENGINEER and VC++ were realized By modularization design idea.

并采用模块化设计思想，基于Pro/E软件及VisualC++语言进行二次开发，实现了具有真实感的弧面分度凸轮的三维实体造型和运动仿真，为弧面分度凸轮机构的运动性能研究和企业的产品优化设计提供了软件平台。

A parameterization design system of globoid indexing cam was also established by using modular design idea,object-oriented VC++ method,and technique of UG secondary development,so that the three-dimensional solid modeling of globoid indexing cam with the sense of reality was realized.

采用模块化设计思想，基于VC++面向对象的方法及UG二次开发技术，建立弧面分度凸轮参数化设计系统，实现具有真实感的弧面分度凸轮的三维实体造型。

A general-purpose follower displacement curve data sheet,fulfilling various kind of law of motion,is implemented for the globoid cam mechanisms used in an automatic tool changer .

本文根据自动换刀装置中弧面分度凸轮的工作特点，设计具有升程和回程段的弧面凸轮从动件通用位移曲线。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。