报道了在慢波场中原子波谱多普勒频移随微波慢波系数的变化，并讨论产生这种现象的原因。
We report the Doppler shift of Na spectroscopy changing with the slow wave factor in a slow wave microwave field the reason of the phenomenon is discussed.
本文在分析了线性调频信号距离—多普勒耦合原理的基础上，提出了一种高耦合系数条件下径向速度估计的新方法。
On the basis of the principle of range-Doppler coupling of linear frequency modulation signal, a new method of radial velocity estimation for high coupling coefficient is presented.
方法应用彩色多普勒超声对56例肝移植患者术前及术后移植肝门静脉、肝动脉血流及肝动脉阻力系数（RI）进行监测。
Methods Portal venous blood flow, hepatic arterial blood flow and resistance index(RI) were determined by duplex Doppler sonography in 56 patients subjected to liver transplantation.
方法应用彩色多普勒超声对56例肝移植患者术前及术后移植肝门静脉、肝动脉血流及肝动脉阻力系数（RI）进行监测。
Methods Portal venous blood flow, hepatic arterial blood flow and resistance index(RI) were determined by duplex Doppler sonography in 56 patients subjected to liver transplantation.
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