electric traction line什么意思、怎么读？单词发音音标、相关例句、释义：电车线

electric traction line 音标：[i'lektrik 'trækʃən lain]

电车线

Conditions that began to approach disastrous proportions when, in 1888, the first commercially successful electric traction line was developed.

当1888年第一条商业上成功的电气化铁轨被制造出来时，压力开始接近危机的程度。