单极接地故障
monopolar grounding fault
单极-单极变换曲线
pole-pole transformed curve
单极（PN极）特性测试结构
Test constucture of single-polar characterise
单极单投
single -pole single -throw
Single-throw
Single-pole
单极单投开关
single-pole single throw switch
垂直接地极
vertical grounding rods
vertical grounding electrode
vertical grounding rod
电解离子接地极
electrolytic grounding electrode
二极接地插座
two pole grounded connector
发射极接地放大器
grounded-emitter amplifier
发射极接地晶体管
grounded-emitter transistor