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In order to study the negativesequence influence to regional power grid caused by autotransformer traction power supply system, formulas of NSeq current and threephase voltage imbalance were derived, based on current distribution analysis of AT traction power supply system and singlephase VVconfiguration train substation. Employing the "train diagram" method, the realtime voltageimbalance curve was obtained in a simulation study, as well as the factors that influence NSeq and some measures to restrain it.

为研究自耦变压器牵引供电系统对地区电网造成的负序影响，首先讨论了AT牵引供电系统、单相VV接线牵引变电站的电流分布，推导得出了负序电流、三相电压不平衡度的计算公式；然后结合"列车运行图法"开发了相应的仿真程序；最后通过一个实际算例，得到了实时电压不平衡度曲线，指出了负序大小的影响因素及相应措施。

The traditional Chinese pusher train in staggered formationwas developed to inlignated barge train in the course of specializa-tion of inland waterway transportation, which brought abouttangible economical benifit.

在河运的专业化进程中，我国特有的梭形顶推船队发展到分节驳顶推船队，明显提高了经济效监。2。

In 1972, 45 people were killed when an Illinois Central Gulf commuter train collided with another train in Chicago's South Side.

1972年10月30日，在芝加哥南部，一辆伊利诺斯的市郊火车与另一辆火车相撞，45人死亡。

Whentomorrow turns in today, yesterday, and someday that no moreimportantin ur memory, we suddenly realize that we r pushed forward bytime. This is nota train in still in which u may feel forward whenanother train goes by. It isthe truth that we've all grown up. And webecome different.

当明天变成了今天成为了昨天，最后成为记忆里不再重要的某一天，我们突然发现自己在不知不觉中已被时间推着向前走，这不是静止火车里，与相邻列车交错时，仿佛自己在前进的错觉，而是我们真实的在成长，在这件事里成了另一个自己。

I and the parents go by train Chende in July 25 to play, the train 19:31 leaves Shijiazhuang in the evening to arrive Chende, Shijiazhuang is away from Chende to be very far, probably is 530 kilometers, therefore, we have ridden 11 hour trains, in July 26 early morning 6:00, we arrives Chende.

在7月25日我和父母乘火车去承德游玩，火车在晚上19：31离开石家庄到承德，石家庄距离承德很远，大概是530千米，所以，我们乘了11个小时的火车，在7月26日早上6：00，我们到达承德。

And what a ride!A friend and I travelled on the famous Ghan train.Wh got on in sydney and we got off in Alice springs,right in the middle of Austyalia,more than four thousand kilometres away.We spent two days and nights on the train.

一个朋友和我乘坐著名的伊斯坦堡火车登上悉尼和我们下车在艾丽斯斯普林斯，400多万公里的路程花了两天两夜。

The scores were compared with national normal data in Chinese and different type of works.Results The result of the worker who undertake train driver with signal and national normal in Chinese,single driver with double driver and national normal in Chinese have the obvious significance.Conclusion Psychological health of single driver was suited to the run condition of the train. railage ; driver ; SCL-90; psychological health

为此，采用SCL-90精神卫生自评量表(The self-reportsymptom inventory，symptom check list 90)对杭州机务段的铁路职工进行了心理健康测定[1]，以探讨机车司机的心理健康状态及其影响因素，为开展特殊职业群体卫生保健和身心疾病的防治，优化铁路运输管理机制提供有益的资料。1对象和方法1·1对象：以杭州机务段602名职工为调查对象，其中机

Initially, assuming that the contact between cam and tappet is"dry contart", a dynamics model of Hertzin contact stiffness and impact damping is established. Next, with dynamic load on cam—tappet pair from the model, an analysis is made both to unsteady EHD oil film in cam—tappet pair under condition of full and partial lubrtication and to wear characteristics of cam profile. then, according to the fact that the lubrication in cam—tappet contact surface is EHD lubrication, taking the interaction between stiffness and damping of unsteady EHD oil film and rigidity of solid object contact into account, a dynamics equation of valve train relating to the dynamic effect of EHD oil film is built up and solved. Consequently, a further study is made on the dynamic characteristics of valve train under interaction of EHD oil film dynamic behavior and the problem of EHD lubrication in cam—tappet pair. Finally, the dynamic effect of full and partial EHD oil film is studied accordingly.

首先，通过对凸轮—挺杆接触为&干接触&的假设，建立了考虑赫兹&接触刚度&和冲击&阻尼&的配气机构动力学模型，用由此求得的凸轮—挺杆表面动载荷对凸轮—挺杆进行了全膜状态和部分膜状态非稳态弹流润滑分析，并研究了凸轮轮廓的磨损规律；然后，是在凸轮挺杆表面存在弹流动压油膜这一事实的基础上，相当于在动力学方程中考虑非稳态弹流油膜的&刚度&、&阻尼&和固体接触&刚度&的耦合作用，建立并求解了考虑弹流润滑行为动力学效应的配气机构的动力学方程，从而深入地研究了弹流润滑行为与动力学行为耦合作用下的配气机构动力学特征以及凸轮挺杆弹流润滑问题；作为前面工作的对应部分，考虑弹流油膜动力学效应的研究工作也同样分为全膜状态和部分膜状态进行。

In addition,but also has the train already the signal which opens close,closes suddenly for some reason,this wants the time delay unlocking,in order to avoid the train breaks in time meets is rotating the rail switch.

此外，还有列车已接近开放的信号，因故突然关闭，这就要延时解锁，以免列车冲入时遇到正在转动中的道岔。

15Pm you will be transferred to the train station, over night train to Aswan Over night in the trainDay1 Arrive Aswan, our local representative will meet and transfer you to your hotel, and then you have the opportunity of visiting the fantastic Philae Temple, High dam of Aswan, free afternoon to enjoy the beauty of natural Aswan Overnight in AswanDay 2 After Breakfast, free morning in Aswan.

说明 ：探索奇迹古老的文明，如埃及，第三个奇妙的世界，同时享受伟大的尼罗河和其他网站下午7时15你将被转移到火车站，在夜间乘火车到阿斯旺在晚上的火车第一天抵达阿斯旺，我们的地方代表将会见和转让您到酒店，然后你有机会参观美妙菲莱神庙，阿斯旺高坝，下午免费享受美丽的自然阿斯旺，隔夜在阿斯旺第2天早餐后，今天上午在阿斯旺自由。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失