牵引

Firstly, electrization knowledge related to the research is introduced. After a deep study on various contact loss detection techniques, especially on the electric arcs detection techniques, we draw the conclusion that the untouched detection technique based on phototube sensor can acquire exact contact loss information, and will to be the leading technique for contact loss measurement in future. Secondly, combining with the special railways system in our country, we analyze the cause of the arcs, and the influence on the power supply system and the on board traction drive due to the arcs in detail, and study the arcs' spectrum characteristic. We also analyze detecting principles and put forward with a method - using phototube sensor to detect the contact loss arcs, conceive the configurations and detection flows of the measurement.

文章通过对电气化铁道相关知识的了解及对国内外离线检测技术的深入了解，尤其是对离线电弧检测技术的了解，总结出了基于光电传感器的非接触离线电弧检测系统能够得到准确的弓网离线情况，并且是国内外检测技术的发展方向；文章详细的分析了离线电弧产生的原因，电弧对机车牵引动力的影响情况，研究了我国铁路系统中离线电弧的光谱特征分布；分析了系统的检测原理，提出了采用光电传感器实现对离线电弧进行检测的方法，并设计了"电力机车弓网离线电弧检测装置"的检测功能和管理功能，规划了系统的组成结构及检测流程。

The huge Phylon Q7 tractor beams found aboard Imperial Star Destroyers require a crew of ten to properly operate.

帝国灭星者上大型的费龙Q7牵引波束需要十个人才能正常操作。

After picture-book teaching, the peer relation gradually develops from conflicting friendship into cooperation, acceptance, and confrontation.

绘本教学介入之后，同侪的关系从物质与距离的牵引下，冲突的摆荡中的友谊基调，逐渐发展出合作、接纳与正面冲突的同侪故事。

The plane rectangular coordinates of the motive object is converted into the length of the tow, and then changed into steps of the stepper motor to control the trace of the motive object accurately.

将物体运动坐标转换为牵引线绳的运动距离，进而转换成步进电机的步数，实现对物体运动轨迹的高精度控制。

ConclusionRectifying nipple depression in cres?鄄cent valve plugger and continual traction byhome-made external fixture was a feasible method.

采用新月形瓣充填加自制外固定架持续牵引矫正乳头内陷是一种可行的方法。

As he came through the postern gate a glimmer of light caught his eye, drawing it up to the distant walkway that ringed Hjeldin's Tower.

他经过后门的时候，忽然瞥见一丝光亮，牵引着他的视线，望向远处，环着Hjeldin城堡的走道。

The change of wire rope traction belt-conveyor after transform of power brake system.

介绍了钢丝绳牵引胶带输送机制动系统改造方案前、后的对比。

Gravure press in traction roll and is adjacent to the first edition of roll usually have weekly rate synchronization mechanism.

瘪印机洋牵引辊与初版辊相邻凡是撤有周速同步机构。

Traction in outdoor sports, should we let them freely for several minutes to defecate in the movement to maintain proper walking posture, with the owner to maintain proper distance, correct or before or after, or left or right of walking habits.

在户外牵引运动前，应先让他们自由活动数分钟以排便，在运动中要保持正确的行走姿势，与主人保持适当的距离，纠正或前或后，或左或右的行走习惯。

The project required to apply vector control method to multiple motor drive system, and propound suitable control method for the system.

该项目研究成果将对电力牵引中双电机调速系统电机控制模型选择提供理论与实验依据。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。