car.di.oid
cardioid的音标和读音:
DJ音标发音: [ˈkɑ:di:ˌɔid]
KK音标发音: [ˈkɑdiˌɔɪd]
cardioid的词性:
n.(名词)
1. A heart-shaped plane curve, the locus of a fixed point on a circle that rolls on the circumference of another circle with the same radius.
心脏线:一种心形的平滑曲线,圆周上一固定点绕另一具有相同半径的圆的圆周转动的轨迹