If you're switching to GRUB 2 because you're installing a new distribution that USES GRUB 2 as its default boot loader, you shouldn't need to deal with these steps.
The control and protection switching electric appliance (CPS) is a sort of New-style multifunction and integration component design to low-voltage distribution and control system.
控制与保护开关电器(CPS)是一种新型的用于低压配电与控制系统的多功能、一体化基础元件。
3
The hybrid time-frequency method was modified to analyze the simultaneous switching noise in power distribution network.