表面绝缘电阻 SIR ; surface insulation resistance ; Insulation resistance

绝缘电阻表 [电] insulation resistance meter

绝缘电阻测试 Insulation resistance test ; megger test ; Insulation resister test ; Wet insulation-resistance test

绝缘电阻测试器 insulation resistance tester ; insulation tester ; i ulationtester

绝缘电阻测试仪 Insulation Resistance Tester ; Insulation Tester

绝缘电阻测试验仪 Insulating resistance meter

绝缘电阻试验 insulation resistance test ; megger test ; Determining insulation resistance

绝缘电阻测量 Insulation test ; Insulation resistance measurement ; Insulation resistance test

绝缘电阻计 insulating-resistance meter