超声波在医学和其它应用中，要使用许多电子仪器设备。

In medical and other applications of ultrasonics, a variety of electronic instrumentation is used.

youdao

超声波在医学和其它应用中，要使用许多电子仪器设备。

In medical and other applications of ultrasonics, a variety of electronic instrumentation is used.

youdao