江苏春晨电缆有限公司生产jscc电机引接线，交流电为什么火线电人而零线不电
Why AC Fire Line is Electric and Zero Line is Not Electric
零线为什么比火线细
Why is the zero line thinner than the fire line?
单相电机通着电源不转为什么还跑
Why does a single-phase motor run when it does not turn on the power supply?
电线为什么有粗细之分
Why are wires thick and thin?
电压为什么用字母U来表示
Why is voltage expressed in the letter U?
电解槽导电铜板电流很大为什么不
Why the current of conductive copper plate in electrolyzer is so high?
普通路灯怎么改成太阳能路灯
How to Change Ordinary Street Lamp into Solar Street Lamp
为什么低压电工的工资相对较低
Why do low-voltage electricians earn relatively low wages?
电工岗位供不应求是为什么?为什么
Why is the shortage of supply and demand for electrician posts? Why?
电工为什么被人戏称为勤杂工
Why are electricians jokingly called chores?
为什么要高压输送电能?高压输电线
Why High Voltage Transmission? High Voltage Transmission Line
相同电源的电压是否相等?为什么
Is the voltage of the same power supply equal? Why?
电线有火线和零线之分为什么单相
What is the single-phase division of wires with fire and zero wires?
电热水器在使用时为什么会触电伤
Why does electric water heater suffer electric shock when it is in use
机械设计工程师和设备工程师哪个
Which is mechanical design engineer or equipment engineer?
分析下5G为什么不会取代wifi
Analyse why 5G won't replace WiFi