另一个重要因素是消除谐波的回声在更高的频率，导致更多的细节，仍然是一个平滑，更自然的声音。

Another vital element is the removal of harmonic echoes in the higher frequencies, which result in a lot more detail and still a smoother and more natural sound.

youdao

分别用二次谐波显像及彩色能量多普勒成像，观察造影前后局部损伤的位置、范围及回声。

Detecting visualization of segmental renal trauma on both second harmonic imaging(SHI)and color Doppler energy imaging(CDEI)before and after enhanced ultrasonography.

youdao

分别用二次谐波显像及彩色能量多普勒成像，观察造影前后局部损伤的位置、范围及回声。

Detecting visualization of segmental renal trauma on both second harmonic imaging(SHI)and color Doppler energy imaging(CDEI)before and after enhanced ultrasonography.

youdao