题目内容
消除多普勒频移曲线混迭的方法不包括( )
2021-10-14
A.调高速度标尺
B.改用发射频率较高的探头
C.移动零位基线
D.改用连续多普勒
E.改用高脉冲重复频率(HPRF)多普勒
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