会話トレ Drill: 電気工学 Electrical engineering, Mathematics
複素数 (ふくそすう)
complex number
a complex number
交流 (こうりゅう kouryuu)
alternating current
three-phase alternating current
三相交流 (sansou-kouryuu)
direct current
直流 (chokuryuu)
虚数 (きょすう)
imaginary number
an imaginary number
How to use
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