脏器的轮廓信息是通过()获得的The contour information of organs is obtained by ultrasonic()
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脏器的轮廓信息是通过()获得的The contour information of organs is obtained by ultrasonic()
A.反射回波Reflection echo
B.散射回波Scattering echo
C.衍射diffraction
D.透射transmission
参考答案: