怎么打出来蓝色字母_怎么打出来蓝色字母

19leclectrricallettersymbolsareessentialForelectricians，BothbasicandDoublePractical.todayiwillShareWithYou19PracticalElecticallectrricalletettersymbols。 WireL:livewire(redwire)N:neutralwire(bluewire)PE:groundwire(yellowandgreentwo-colorwire)Many220VelectricalorelectricalapplianceswillmarkLandN.Thesetwopointsarethecontactpointsofthepowersupply.InadditionTherewillalsobemarkedontheswitchesandsockets. SocketSwitchingPowerSupplyac（AC）DC（DC）thesetwosymbolscorrscorrscorrscorttotwocommonpowersupplies，andareconnectedwwithelectricalappliances...

electricansmustmaster！19electrical字母符号，basicandpractical.today，ihaveselected19commonlyused字母dissinefiersForyou。 电线：代表Hotwire（Redwire）n：代表Neutralwire（blue线）Omarkedonswitchesandsockets。 SocketSwitch...

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