线对线 meaning in Chinese

rail-to-rail

Thirdly , the wire size variations , vertical balance , insulation and joint features on adsl lines will affect the insertion loss and introduce additional noise , thus reducing the transmission rate and degrading the transmission performance . fourthly , the bridge tap on the adsl line will greatly change the frequency response and phase - frequency features of the line insertion loss
第三，线对线径的改变、线路的纵向平衡性、线路的绝缘性能和线路接头的性能将影响线路的插入损耗、引入附加噪声，从而降低adsl的传输速率，影响adsl的传输性能。