钳形接地电阻测试法
pincer-like ground resistance test method
接地电阻测试仪
grounding ohmmeter
ohmmeter for earthling resistance measurement
earth resistance tester
中性线接地电阻
neutral grounding resistor
接地电阻测量
grounding resistance measurement
grounding resistance measuring
接地电阻测量仪
grounding resistance measurement instrument
Groundmeter
接地电阻试验器
grounded resistance tester