1871, in reference to Christian Doppler (1803-1853), Austrian scientist, who in 1842 explained the effect of relative motion on waves (originally to explain color changes in binary stars); proved by musicians performing on a moving train. Doppler shift is the change of frequency resulting from the Doppler effect. The surname is literally "Gambler."
双语例句
1. Objective To simulate the ultrasound Doppler flow imaging of mitral regurgitation.
目的模拟二尖瓣反流的超声doppler成像.
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2. Doppler velocity tracing was of high speed and high hinder.
Doppler流速曲线为高速、高阻型.
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3. The pulsation in the original data of Doppler velocity has to be removed before the retrieval.
用VAP方法反演风矢量场前必须首先消除原始Doppler速度资料中的脉动.
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4. The flowing counter pulsating and volume of blood stream were showed clearly in colour doppler.
彩色多普勒(doppler)清楚显示眼上静脉血液逆向流动及搏动频谱.
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5. The Doppler frequency can be obtained as a heterodyne or beat effect.
