英语翻译Electric TractionIt is generally held that the most efficient method of railway operation,and ultimately the most economical,given a reasonably cheap electricity supply,is with electricity as the motive power.The electric locomotive is no

英语翻译Electric TractionIt is generally held that the most efficient method of railway operation,and ultimately the most economical,given a reasonably cheap electricity supply,is with electricity as the motive power.The electric locomotive is no
英语翻译
Electric Traction
It is generally held that the most efficient method of railway operation,and ultimately the most economical,given a reasonably cheap electricity supply,is with electricity as the motive power.The electric locomotive is not dependent,like its steam counterpart,on the competence of driving and firing or the fuel burned.On the other hand,the speeds that will be possible with any given load are completely predictable and apart from signal or permanent way checks,or other delay-producing casualties,exact observance of schedule times can be guaranteed within narrow limits.With such accurate timetable observance trains can be operated with shorter turnaround times at terminals,which means that more intensive use can be made of rolling stock than is generally possible with steam power.
In suburban areas the rapid acceleration afforded by electric motors from rest and in recovery from speed restrictions makes it possible to work trains with very frequent stops at higher speeds and a closer headway than with steam locomotives.Multiple-unit working,which brings the motors of two or more sets of passenger stock,or two of more locomotives,under the control of one motorman in the leading driving cabin,would be impossible with steam,for each steam locomotive must be manned by its own driver and fireman.Moreover,except on the fastest and heaviest passenger and freight duties,on which it is advisable to have a second man at the head end to assist in the observation of signals and,if necessary,to attend to the electrical equipment,the equivalent of the steam locomotive fireman is unnecessary; thus the great majority of electric trains have a driver only,which makes for considerable economies in staffing.

英语翻译Electric TractionIt is generally held that the most efficient method of railway operation,and ultimately the most economical,given a reasonably cheap electricity supply,is with electricity as the motive power.The electric locomotive is no
电气铁路
以电力推动的电机车在合理价格电力供应的情况下,乃是最经济和最有效的铁路运营方法已被普遍地公认.电机头不似比方蒸汽机车在驾使和效率对击发与燃料燃烧上的依赖.另一方面,除了遇上信号或永久检查路障还是其它意外伤亡造成的延误之外,速度达到任何给定的都可以预期,能够保证准确的车期在狭窄的范围内.如此遵守时间的列车更能用较短的时间在月台掉转头,使之比以蒸汽推动的在使用上更频繁.
在郊区的速度遇到限制後,能急剧加速再开,可以频频在高速中停下来,大大地 超越了蒸汽机的运作能力与空间.而多单元运作包括两个或以上乘客车箱及两个或以上机车,在驾使箱里只用一个驾使司机的操控乃蒸汽机所不能办到的,因为每个蒸汽机头都须要一名驾使司机和一名灭火员.此外,除了过於重型的货运或快速客车或要多一个副司机,恊助观测信号的任务.若果须要或可检查车上的电动设备,就如蒸汽机车要有一名灭火员则完全不须要.所以大部份电动列车只有一名司机,使能大大地减低了成本和员工.
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