火花塞电阻试验
spark plug resistance test
回路电阻测试仪
circuit resistance tester
loop resistance testing instrument
接地电阻测试仪
grounding ohmmeter
ohmmeter for earthling resistance measurement
earth resistance tester
绝缘电阻测试仪
insulated resistor tester
insulated resistance tester
钳型电阻测试仪
clamp earth resistance tester
电火花电解复合加工
electric discharge-electrolytic combined machining
compound EDM and ECM technique
火花电阻圆盘钢丝刷
spark-resistant wire wheel brush