Search the dictionary A Chinese word or character, or English Draw a character Search 3 entries. duōpǔlè 多普勒 Christian Johann Doppler, Austrian physicist who discovered the Doppler effect duōpǔlèxiàoyìng 多普勒效应 the Doppler effect duōpǔlèxiàoyìng 多普勒效應 the Doppler effect