英语翻译On most modern railways,detection of the train’s position on the line and signal changing are done automatically and colored-light signals have largely taken the place of mechanical ones.The light signals usually mean:Green:proceed at l

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英语翻译Onmostmodernrailways,detectionofthetrain’spositiononthelineandsignalchangingaredoneautomatically

英语翻译On most modern railways,detection of the train’s position on the line and signal changing are done automatically and colored-light signals have largely taken the place of mechanical ones.The light signals usually mean:Green:proceed at l
英语翻译
On most modern railways,detection of the train’s position on the line and signal changing are done automatically and colored-light signals have largely taken the place of mechanical ones.
The light signals usually mean:
Green:proceed at line speed.
Yellow:warning-the next signal is at red.
RRailway signaling differs from the traffic lights used on roads in that trains cannot stop quickly; for example,a train traveling at 160 km/h (100 mile/h) would need several kilometers to stop.Therefore on a railway,train need to be given advanced warning of a red stop signal so that they can slow down to a speed where they can stop quickly (a yellow signal).Put another way,yellow signals usually do not indicate an impending change to a red signal at the same location.Rather,a yellow signal gives a train advance warning that the following signal will be red.
To achieve this,the railway is divided into “blocks”,where blocks are stretches of track between two signals.Trains are automatically detected when they enter a block,which is done by what is known as a “track circuit”.
When calculating the size of the blocks and hence the spacing between the signals,the following has to be considered:line speed (the maximum speed the train is allowed to travel); gradient (to compensate for the assistance or otherwise afforded to deceleration); sighting (the ability of the driver to see the signal); reaction time (of the driver).
The track at either end of the block is electrically insulated,and within the block a small electrical current passes though the track.When a train passes a signal and enters a block,the metal wheels and axle of the train short-circuit the current,which causes a relay association with the track circuit to itself become de-energized.
When the relay is de-energized,the signal which the train has just passed automatically turns from green to red,the signal behind that one automatically turns yellow,and the signals behind that one can remain green.
ed:stop.

英语翻译On most modern railways,detection of the train’s position on the line and signal changing are done automatically and colored-light signals have largely taken the place of mechanical ones.The light signals usually mean:Green:proceed at l
在大多数的现代铁路上,在线上的火车的位置的发现和和信号的变更被自动地完成而且染色光信号已经很大程度上代替了机械的.
轻的信号通常意指:
绿色:以线速度着手进行.
黄色:警告-下一个信号在红色.
在铁路上的信号不同于在道路上的交通号志灯,因为火车不能够停止得很快; 举例来说,一列在 160 公里/h(100 里/h) 旅行的火车会需要一些公里停止.因此在铁路上,火车需要有红色停止信号的先进警告,以便他们能对他们能停止得很快地 (一个黄色的信号) 的速度减慢.放另外的一个方法,黄色的信号通常在相同的位置不指出对一个红色的信号一个逼迫的变化.然而,一个黄色的信号给火车进步警告下列的信号将会是红色的.
为了要达成这,铁路被区分为区段是在二个信号之间的轨道的伸展的 " 区段 " .当他们进入一个区段,以即是一个 " 轨道线路 " 的方式做的时候,火车自动地被发现.
当计算区段的大小的时候而且在信号之间的间隔由此而来,下列者必须被考虑:线速度 (火车被允许旅行的最大速度); 倾斜度;( 为协助偿还或者对减速负担) 瞥见;(驾驶员的能力见到信号) 反应计时.(驾驶员)
轨道在区段的任一结束电地被绝缘,而且在区段一个小的电流里面经过虽然轨道.当一列火车经过一个信号而且进入一个区段、金属制的轮子而且火车的轮轴的时候发生短路涌流,这用轨道线路对它本身引起接替者协会变成激励.
当接替者被激励的时候,火车自动地才通过从绿色到红色的旋转的信号,在一自动地变黄色的后面信号和在他能保持绿色后面的信号.
ed:停止.

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在最现代化的铁路, 检测列车的位置上线和信号变化都是自动和彩色光信号已大致采取代替机械的. 该灯通常是指:绿色:开始时线速度. 黄色:警告,下一球是红色. rrailway信令不同于交通灯,在道路上使用,在这列车停不了迅速; 举例来说, 列车行驶在160公里/小时( 100英里/小时)还要几公里处停下. 因此,在铁路, 火车需要有先进的预警红色停车信号,使他们能减慢到速度,在那里可以快速阻止(黄色信号) . 换句话说,黄色信号通常不显示即将发生变化的一个红色信号,在同一地点. 相反,黄色信号,使列车提前警告说,继信号会红. 为实现这一目标,铁路分为"砖" ,那里有座横跨轨道两路信号. 列车自动检测,当他们进入一个座,这是做什么的,是被称为"轨道电路" . 当尺寸的砖,因此,间距信号, 以下是要考虑:线速度(最高时速的列车让旅行) ; 梯度(以补偿或援助,否则给予减速) ; 踪迹(能力的司机看到信号) ; 反应时间(司机) . 轨道两端的座是电绝缘, 并且在A座的小电流通过,虽然轨道. 当列车通过一个信号,进入座金属车轮和车轴的火车短路电流, 其中一个原因接力协会与轨道电路本身成为德钢铁长城. 当接力德振作精神,信号的列车刚刚通过自动转由绿转红, 信号的背后,一个自动枯黄,而信号的背后,一可以保持绿色. 署:停止.

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