The third item is that you must have the appropriate outfit and equipment.
第三点是你必须有合适的全套用具和装备。
What is the item number (case number) of this equipment?
这台设备的位号(箱号)是若干?
Dielectric loss measuring is the normal item to test the high voltage equipment in electric power system.
介质损耗测量是电力系统中检测高压电气设备的常规项目。