列车

The wireless communication between urban rail transit vehicles and trackside access points is a key technology in communication based train control system.

轨道交通列车与轨旁接入点设备之间的无线传输是基于通信的列车控制系统中的关键技术。

Combining the Global Positioning System and Geographic Information System in rail traffic, which could increase positioning precision, reduce trackside equipment, decrease the cost of construction and maintenance, has become a development direction in Train Control System.

将全球定位系统和地理信息系统结合在一起应用于轨道交通中，可以提高列车定位精度、减少轨旁设备、降低建设和维护成本，这已经成为列车运行控制系统的一个发展方向。

It sped along a deep green flood plain, over rocky rivers, through anonymous towns and raced Japanese cars on trackside roads.

列车快速驶过绿色的水漫平原，岩石河床的河流和许多无名小镇，日制的汽车在铁路边的公路上和列车齐驾并驱。

Considering the characters of the viscoidal turbulent flow over high-speed train,the computing model of the outer fiow field for high-speed train has beenestablished based on the incompressible fluid Navier-StOkes epuation and theturbulent model of ke two equations. The equation set of the flow field problemvia finite element methods has been set up.

根据高速列车粘性紊态绕流的特点，在较少简化的条件下以Navier-Stokes方程和κ-ε两方程紊流模型为基础，建立了高速列车外流场的计算模型，在近壁区域采用壁面函数修正紊流模型。

The testing will be extensive — the new train won't go into service for six years.

列车将会进行严格测试—新型列车在六年内不会投入营运。

The characteristics of flow fields in annuluses between moving and static walls formed in train running through a tunnel is the important content of tunnel aerodynamics and also one of the main bases to study and solve the problem of the piston wind in tunnels.

列车通过隧道时，列车表面与隧道表面之间的环隙流场特性，是隧道空气动力学的一个重要内容，也是研究和解决隧道活塞风的主要依据之一。

The results show that the vehicle acceleration, the dynamic wheel load and offload factors increase with train speed, and distribute linearly. The safety of train operation and running comfort can meet the requirements when the high-speed train under secondary suspension passing through ballasted track subgrade structure. The dynamic displacement of the system is less influenced by train speed. The dynamic stress of subgrade surface increases with speed improving, and it is distributed as saddle along the lateral direction and as parabola along the longitudinal direction of subgrade surface. The dynamic stress of subgrade declines sharply along the depth of subgrade. The dynamic stress on 3 m depth below subgrade bed surface is about 16 percent of that of subgrade surface.

结果表明：车体加速度、动轮载和轮重减载率均随车速的提高而增大，呈线性分布；具有二系悬挂的高速列车通过有砟轨道路基结构时，列车的安全性及舒适度均能满足要求；系统动位移受速度影响较小；路基面动应力随速度的提高而增大，并在横向呈马鞍形分布，在纵向呈抛物线形分布；路基动应力沿路基深度方向衰减较快，在基床表面下3 m处，动应力只有基面的16%左右。

The magnetism aerosol train counterbalances the earth gravity using the electromagnetic force, thus causes the train aerosol on the track.

磁悬浮列车利用电磁力抵消地球引力，从而使列车悬浮在轨道上。

Many of them had volunteered out of idealistic motives for the work, some of them had been sent out under church auspices and received only thirty dollars a month, so it was doubly disillusioning to them to see trainloads of food that were meant to go to China's starving peasants go one thousand miles into the interior and then come one thousand miles back again by truck and boat to be sold by the military on the black market.

他们当中很多人是出于高尚的动机志愿参加这项工作的，有些人是由教会派出的，每月只拿三十美元的工资，因此当他们看到，一列车一列车的粮食经过一千英里的路程运到内地，本来是为救济中国饥饿的农民用的，岂料军人们又把这些粮食用车载船运经过一千英里倒运回来，在黑市上售卖时，他们倍加感到痛心疾首。

In China, a great number of freights are transported by train, especially by oil tank train.

我国是个货运列车大国，油罐列车运输占着重要的地位。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。