多普勒效应 duōpǔlèxiàoyìng Doppler effect Origin Definitions Defs Strokes Stroke Words Sentences Sents 多普勒 duōpǔlè Doppler Christian Johann Doppler (1803–1853), Austrian physicist; (used as a prefix) Doppler (as in the Doppler effect or Doppler ultrasound)效应 效應 xiàoyìng noun effect A physical or chemical effect or reaction, typically used in scientific contexts.