failure logging短语¹⁴⁴⁹⁷²⁺² 基本例句 故障记录 This paper introduces the working principle, realizing method, main functions and anti-intrusion measures of two- way signal power supply monitoring and failure logging devices. 介绍了双路信号电源监测装置的工作原理、实现方法、主要功能与抗干扰措施。 cnki