单词	pitch radius
释义	pitch radius 节圆半径
随便看	natural parameter Natural Parameter Method natural parameter space natural parent natural period of oscillation natural period of oscillations Natural period of soil site natural period of vibration natural periods natural parents natural park Natural parks natural parthenocarpy natural parthenogenesis natural partial order naturalpartial ordering natural partial ordering natural parting agent natural parts Natural parturition natural passive immunity natural-passive immunity natural pasture natural path natural pattern