circletn.小环；小圈circlen.圆圈；圈子；包厢v.划圈；包围；盘旋；环绕circle pipe net环状管网circle division分度线,度盘分划circle movement圆周运动circles theorem圆盘定理circle gill net围刺网circle shearing圆周剪切circle mappings圆周映射circle eccentric圆偏心circle sprinkler环形喷灌机circle waveguide圆形波导