Theoretical and experimental results show that this method can eliminate the Doppler ambiguity spectra produced by transit-time effect, turbulence and velocity gradient in sample volume.
理论与实验研究结果表明该方法可消除渡越时间效应、湍流和采样单元内流速梯度造成的频谱模糊。
Objective To investigate colonic transit time (CTT) in normal subjects and evaluate the effect of cisapride on CTT on chronic functional constipation.
目的了解国人结肠转运时间的正常值，并探讨西沙必利对慢性功能性便秘患者的结肠转运时间(CTT)的作用。
Objective To investigate colonic transit time (CTT) in normal subjects and evaluate the effect of cisapride on CTT on chronic functional constipation.
目的了解国人结肠转运时间的正常值，并探讨西沙必利对慢性功能性便秘患者的结肠转运时间(CTT)的作用。
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