17. 「變頻調速」之英文名稱為下列何者？
(A)Speed Regulation by Variate Torque
(B)Speed Regulation by Frequency Variation
(C)Speed Regulation by Constant 第1頁，共5頁 Power
(D)Speed Regulation by Pole Changing   

答案：登入後查看
統計： A(2), B(38), C(1), D(2), E(0) #2880146