牵引

It is showed different "V" connection transformers,"Y" connection transformers and balance transformers, and some other transformers used in AT supply system. All of these transformers are analyzed from safe power supply, economic advantages, and technology required.

给出了基于&V&形变压器、&Y&形变压器和平衡变压器等多种同相AT牵引供电系统结构，并从供电可靠性、经济性和技术要求上，分析了各种同相AT牵引供电系统的优劣。

Simulation results of systems with V,v connection, three-phase-to-four-phase connection and single YN,dl 1-275 connection are showed in this paper. The proposed configurations of cophase AT power supply systems, balance compensation methods, comprehensive detecting reference currents are proved to be true and feasible.

针对本文给出的同相牵引供电系统，基于Matlab/Simulink建立了仿真模型，给出了V，y接线、三相变四相平衡接线和单台YN，d11-275接线的同相AT牵引供电系统仿真结果，仿真结果证实本文给出的同相AT供电系统结构

Retractors can be placed across the medial column to retract the anterior soft tissues.

牵引器置入肱骨内上髁嵴牵引肘前部软组织。

Right hand at the top of the frame. Second, he uses a Bookwalter pediatric ring retractor system to keep the vaginal cavity open as the dissection progresses. Two retractors attached to the bottom of the ring maintain downward and lateral pressure within the cavity.

其次，Dr。 Meltzer用了Bookwalter小儿科环形牵引器系统来保持阴道张开，以利整个切割手术进行，环底附着的两个牵引器则维持了阴道向下和侧面的压力。

Meltzer right hand at the top of the frame. Second, he uses a Bookwalter pediatric ring retractor system to keep the vaginal cavity open as the dissection progresses. Two retractors attached to the bottom of the ring maintain downward and lateral pressure within the cavity.

其次，Dr。 Meltzer用了Bookwalter小儿科环形牵引器系统来保持阴道张开，以利整个切割手术进行，环底附着的两个牵引器则维持了阴道向下和侧面的压力。

Meltzers right hand at the top of the frame. Second, he uses a Bookwalter pediatric ring retractor system to keep the vaginal cavity open as the dissection progresses. Two retractors attached to the bottom of the ring maintain downward and lateral pressure within the cavity.

其次， Dr。 Meltzer 用了 Bookwalter 小儿科环形牵引器系统来保持阴道张开，以利整个切割手术进行，环底附著的两个牵引器则维持了阴道向下和侧面的压力。

Meltzerr right hand at the top of the frame.Second,he uses aBookwalter pediatric ring retractor system to keep the vaginal cavity open as the dissection progresses.Two retractors attached to the bottom of the ring maintain downward and lateral pressure wit你好n the cavity.

其次，Dr.Meltzer用了Bookwalter小儿科圆环牵引器系统来保持阴道张开，以利整个切割手术进行，环底附着的两个牵引器则维持了阴道向下和侧面的压力。

Electric traction has become the development orientation of rail traffic traction power.

交通是社会经济运行的大动脉，轨道交通又一直是我国交通运输业的主体，而电力牵引已经成为轨道交通牵引动力的发展方向。

After researching the proplems above, the standard and systematic theory on erection of hauling system of suspension bridge is formed ,and by application in erection of RengYang bridge "which is domestic first, the third in the world", main cable wire strand was kept well in the erection, record which is,the most quik ever in china or in the world and which can erect eight main cable wire strands in a day was even finished, it guaranteed the high—quality and high—efficient hauling erection in wire strand of RenYang bridge.

经过以上几个方面的研究，初步形成了一套规范化、系统化的悬索桥主缆索股牵引技术研究理论，通过在&中国第一、世界第三&的润扬大桥主缆施工过程中的具体应用，索股形状保持较好，有效地控制了索股乱丝、呼拉圈、扭转等现象的发生，曾实现一天架设8根(单边4根)的国内外最快施工记录，确保了大桥主缆索股优质高效的牵引施工。

A sliding mode based optimizer and traction control system which is used for a traction control system of in wheel driven EV is developed in this paper.

改进了用于轮式驱动电动车牵引控制中最优滑移率辨识的滑模变结构优化器，设计了基于滑模变结构的牵引控制系统。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。