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本文第Ⅰ部分(应用声学,5-1(1986),36-43)着重介绍了利用超声Doppler技术进行血流速度绝对值的测量问题。这部分将介绍超声Doppler技术在提取血流速度方向的信息等方面的应用。
Section I (Applied Acoustics, 5-1 (1986), 36-43) highlights the measurement of absolute blood flow velocity using the Doppler technique. This section will introduce the application of ultrasound Doppler technology in extracting blood flow velocity direction information.