输入线路 meaning in Chinese

incoming line circuit

Sti self test input circuit
自检输入线路
Hearing aids - part 6 : characteristics of electrical input circuits for hearing aids
助听器.第6部分:助听器电输入线路的特性
Standard specification for compact round stranded copper conductors using single input wire construction
使用单输入线路结构的致密圆铜绞接导线的标准规范
Standard specification for compact round stranded aluminum conductors using single input wire construction
使用单输入线路结构的致密圆铝绞接导线的标准规范