单词	epicycloid
释义	epicycloid noun epi·​cy·​cloid ˌe-pə-ˈsī-ˌklȯid  : a curve traced by a point on a circle that rolls on the outside of a fixed circle epicycloidal ˌe-pə-sī-ˈklȯi-dᵊl  adjective Illustration of epicycloid epicycloid E traced by point P on circle R rolling on fixed circle F Word History First Known Use circa 1696, in the meaning defined above
随便看	pietisms pietist pietistic pietistically pietists pietoso piets piety pietà piezo crystal piezo resonator piezo- piezocrystallization piezoelectric piezoelectric oscillator piezoelectrically piezoelectricities piezoelectricity piezoluminescence piezometer piezometers piezometric piezometric surface piezometries pif paf

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