| 释义 |
试电笔shìdiànbǐ检测电源相线是否带电或电气设备是否漏电的工具,形状像自来水笔,筒尖由金属制成,笔中有电阻和小灯泡。检测时,笔尖接触电源相线或电气设备上一点,并使试电笔和人体形成一个回路,如小灯泡亮了,就证明其带电或漏电。{test pencil; screwdriver with voltage tester; pen-like device with a bulb and a resistor inside and a metal point at one end which, when it makes contact with a certain point of electrical wiring or apparatus, forms a circuit with the human body, and when the bulb turns on, indicates the presence or leakage of electricity;}也叫also电笔{diànbǐ}。 |