What is the difference between voltage ac and dc? ac: The English abbreviation of alternating current, which means alternating current, such as ac220v, which means AC 220v voltage; dc: the English abbreviation of direct current, which means direct current, such as dc5v means DC 5v voltage. Extended information: voltage (voltage) Use "═" to distinguish series, and use "_" to subdivide within a series. The episodes are only marked with the broadcast date of the first season. Movies start with "Superman" (1978); TV series start with "Smallville" (2001); animated movies start with "Superman: Doomsday" (2007); animated series (including spin-offs) start with "Batman" (1992); animated shorts start with "Spectre" (2010); Lego starts with "The Lego Batman Movie: DC Heroes Assemble".
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