Compared to straight electric locomotives diesels save the heavy investment required for overhead wires or third rails . 與架線電力機(jī)車相比,柴油機(jī)可以節(jié)省架線或敷設(shè)第三條軌道的巨額投資。
Saitong focuses on developing , manufacturing and selling overhead contact line systems , traction substation equipments , third rail systems etc 公司主要設(shè)計(jì)、制造和銷售鐵路接觸網(wǎng)系統(tǒng)、牽引變電所設(shè)備和城軌交通鋼鋁復(fù)合接觸軌系統(tǒng)等。
After expounding the power supply and current collection modes of the rolling stock in shanghai umt pearl line in terms of technology and economy , the author argues that two current collection modes shall be adopted for shanghai umt pearl line , i . e . a third rail collector be on skybridge while the overhead contact line on the ground 摘要闡述了城市軌道交通車輛供電受流方式的特點(diǎn),并從技術(shù)和經(jīng)濟(jì)兩方面對(duì)上海明珠線車輛供電受流方式進(jìn)行了探討,提出了明珠線車輛應(yīng)采用雙受流方式,即高架橋上采用接觸軌受流器受電,地面采用架空接觸網(wǎng)受電弓受電。