test installation短语¹⁴⁴⁹⁷²⁺² 基本例句 试验设备 This article introduced one kind of brand-new involvement type microcomputer relay protection test installation and its realization principle, main function, the characteristic and application method. 介绍了一种全新的介入式微机继电保护的实现原理、主要功能、特点和使用方法。 dictall