multipoint earth中文什么意思

例句与用法

1. the secondary circuit plays an important role in guaranteeing the security of power product and supplying high-quality electrical energy for customers . however, there has not been an on-line monitoring device that can monitor the multipoint earth of the secondary ac circuit
   二次系统对保证电力生产安全及向用户提供高质量的电能起着极为重要的作用，但目前尚没有一种能在线监测二次交流回路是否存在多点接地的在线监测装置。