no-troubleBNC²³⁶²¹³⁺¹ 例句 Analyzing through the trouble example, and put forward the method of inspection and maintenance according to the trouble of broken circuit and improper contact of circuit of no-trouble code display. 结合故障实例进行分析，针对无故障码显示的线路断路和接触不良故障，提出了检测方法和维修方法。 cnki