用彩色多普勒超声血流仪检测血管中央的时间-流速，以评估血流量的基线。
The baseline flow was estimated with continuous-wave Doppler by recording the time-velocity at mid-vessel.
实验结果显示，用超声来提取绿色植物中的叶绿素，可以增大提取率，缩短提取时间。
The experimental results showed that extracting chlorophyll by ultrasonic wave from green plant could increase extracting rate and shorten extracting time.
用均匀设计法考察超声频率、超声时间和溶剂用量对沙枣油提取率的影响，得到提取沙枣油的优化超声工艺条件。
The influences of ultrasonic frequency, ultrasonic time and solvent content on the extraction rate of fat oil in Elaeagnus angus-tifolia L. were studied. The optimum extraction condition was obtained.
用均匀设计法考察超声频率、超声时间和溶剂用量对沙枣油提取率的影响，得到提取沙枣油的优化超声工艺条件。
The influences of ultrasonic frequency, ultrasonic time and solvent content on the extraction rate of fat oil in Elaeagnus angus-tifolia L. were studied. The optimum extraction condition was obtained.
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