轉速 (rpm) = 60 x 60x2 / 4 = 1,800 rpm. 2. 60 Hz 2P 馬達. 轉速 (rpm) = 60 x 60x2 / 2 = 3,600 rpm ... 轉速 (rpm) = 50 x 60x2 / 2 = 3,000 rpm ... 速度 SPEED.
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