32.水聽器(hydrophone)無法量測下列何種超音波物理量?
(A)聲阻抗(acoustic impedance)
(B)脈衝持續時間(pulse duration, PD)
(C)空間脈衝長度(spatial pulse length, SPL)
(D)脈衝重複頻率(pulse repetition frequency, PRF)
答案:登入後查看
統計: A(642), B(61), C(115), D(102), E(0) #3283412
統計: A(642), B(61), C(115), D(102), E(0) #3283412