55 下列何者不是正弦波(sinusoidal wave)的參數?
(A)頻率(frequency)
(B)振幅(amplitude)
(C)相位(phase)
(D)時長(duration)
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統計: A(19), B(3), C(35), D(77), E(0) #562180
統計: A(19), B(3), C(35), D(77), E(0) #562180