查询词典 arc

The main principle of the DCcontactor:The electromagnetism coil switches on electricity thetitle iron to match with the iron heart on,the suction of theelectromagnetism system overcomes the counterforce of the springarouses the action of the contact, the main electric circuitconnected;The electromagnetism coil cuts the power the counterforceof the spring arouses the title iron from move to open, the headcontact breaks to open the output electricity arc give or get anelectric shock in drive to arc-extinct-chamber and made longer,thestrong cooling dissociates and put out,the main electric circuitcuts off.

接触器的主要原理：电磁线圈通电，衔铁和铁心吸合，电磁系统的吸力克服弹簧的反作用力带动动触头与静触头接触，主电路接通；电磁线圈断电，弹簧的反作用力带动衔铁和动触头弹开，触头断开产生的电弧在灭弧室中受到磁吹灭弧和电动力驱动被拉长，并强烈冷却去游离而熄灭，主电路切断。

To improve its reliability, it is necessary to investigate the effects of various factors on the arc moving process, as well as the dynamic change of the whole process from arcing to arc suppressing.

要提高低压电器产品的可靠性，就必须研究各种因素对电弧运动过程的影响，以及从燃弧到灭弧整个过程的动态变化。

On the one hand, the component method is introduced into flowchart design, which can not only enlarge the depth and the connotation of the flowchart, but also extend the traditional concepts of the flowchart. By combining the component method and the objectoriented method, it will be easy to illustrate the industry flow and meet with the future requirements of the industry control software. On the other hand, the trajectory concepts in plane moving, the method of using Bezier Curve to approach the 1/4 arc to implement the arc circumrotation, the method of using graphic elements' combination to extend the expression capability, and the method of combining the graphic elements'combination, three-dimensional graphic elements and bitmaps to realize the three-dimensional effects to express the industry flow more realistic are brought forward in this dissertation.

工控软件中最能够体现人机接口设计创造性的画面当属流程图，本文对流程图设计进行了深入研究，提出了一种工控软件流程图设计的新方法：一方面在流程图设计中引入部件化方法，扩展流程图的深度与内涵，延伸了流程图的传统概念与意义，将部件化技术与面向对象技术相结合，能够更好地实现对工艺过程的描述并适应工控软件的未来发展要求；另一方面对流程图中动画关联和三维化这些新兴领域进行了研究，提出了平移动画中的&轨道&概念，以实现图元的沿曲线平移，提出了在圆弧旋转动画中用Bezier曲线逼近〓圆弧的工程化方法，并用最小二乘法进行了验证和工程化参数的获取，实现了利用图元组合来扩展流程图的表达能力，采用了图元组合、三维图元和位图相结合的方法来实现逼真的三维效果，以使工控软件更加符合人机工学，更能形象地反映工艺流程。

Comparing with common side hybrid laser-arc welding, coaxially combined laser beam and arc can provide a symmetrical circular thermal source on the workpiece surface, which is convenient for 3-D welding.

与目前常用的旁轴激光-电弧复合焊相比，激光-电弧同轴复合可以在工件表面提供对称热源，焊接质量不受焊接方向影响而适于三维焊接。

Based on the tooth profile plane model's boundary scope and the geometry dimension of the transmission gear, the paper calculates every point's Cartesian coordinate in all parts of tooth profile, such as addendum arc, involute, dedendum easement curve, axle hole arc and other boundary line section.

最后根据齿廓的几何尺寸和五类齿廓平面模型的边界范围，计算齿廓各部分，即齿顶圆圆弧段、渐开线段、齿根过渡曲线段、轴孔圆圆弧段和齿廓平面模型上其他边界线段上点的坐标，并连接这些点生成各部分线段，从而生成齿廓平面模型。

This text aim at the neutral spot not connect the ground or through eliminate arc coil to conncect ground of connecting a ground of system, put out to connect a ground of electricity arc ability existently low and starts of the system occurrence Human body feeling electricity connect the ground to conduct electricity to press, the equipments inner part breaks down to connect the ground, having no problem of protect the ability.On the foundation of the thorough research protection method, put forward to change into above-mentioned system the protection project that the intelligence connects a ground of system movement.At the same time, introduced the intelligence to connect a ground of composing of system, the work principle, function and characteristicses and system to circulate the circumstance.

本文简要分析了我国配电网自动化的现状和面临的主要问题，指出合理、高效的配电系统网络结构是提高供电可靠性和供电质量的前提条件，本文在对国内现有配网方式进行全面分析的基础上，结合我国城网改造的目标的显状，提出了一种科学&田&字型接线，对其技术性、经济性和可靠性进行了论证，（分析了不同故障情况下系统如何完成故障的定位、隔离，网络的重构及负荷的转移，指出该方案具有很高的供电可靠性和相对较低的备用容量，是一种符合国情国力并能适应配网自动化发展的组网方案）；给出了适合该方案的不同控制模式并进行了优劣比较，指出集中远方控制模式划配网自动化发展的必然趋势；最后本文给出了该控制模式下的测控方式。

The experimental study on arc winds order to understand the influences of boundary specimens include arc windshields and relative hield of fighter subjected to bird impact is presented.

进行了某型飞机圆弧风挡抗鸟撞试验研究，为了解风挡边界及相关附件的影响。

By comprehensive analysis of the characteristics of formation and reconstruction, six tectonic belts in the northeast part of Junggar basin were divided: marginal obduction zone in Early Paleozoic(O1-2)?melange mag-ma collision zone of late Paleozoic (D1), volcanic arc-compression zone of Late Paleozoic (D1), back-arc folded belt of Late Paleozoic (D2_3), marginal depression folded belt of Late Paleozoic (C1-P2) and foreland basin gentle anticline belt of Mesozioc era, etc.

通过&建造&与&改造&特征的综合分析，划分了准噶尔盆地东北缘的构造带：早古生代（1－2）陆缘逆冲带；晚古生代（D1）混杂岩浆碰撞带；晚古生代（D1）火山岩浆岛弧挤带；晚古生代（D2－3）弧后盆地褶皱带；晚古生代（C1－P2）陆缘盆地褶皱带以及中生代前陆盆地平缓背斜带等6个构造带。

Panton B.E..Contraction of the welding arc caused by the flux in tungsten-electrode argon-arc welding. The Paton Welding Journal,2000,(1):pp5～11

在碳钢A-TIG焊中，使焊接熔深增加的主要原因有电弧收缩和表面张力梯度两个方面，起主要作用的是电弧收缩。

In CO2 gas metal arc welding, the difficulty hi seam tracking by pendular arc sensor is how to attain the tolerance signal of weld joint.

在CO_2气体保护焊中，采用摆动电弧传感器进行焊缝跟踪的困难在于如何提取准确的焊缝偏差信号。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷