bicircular spline双圆弧样条
Bicircular cylinder双环柱体
bicircular curve[数] 重圆点曲线;二重圆点曲线
bicircular quartic[数] 重圆点四次线
bicircular surface四次圆纹曲面
bicircular arcs双圆弧
bicircular arc interpolation双圆弧插值
bicircular n-polygon双圆n边形
bicircular n-polygon of m class第m类双圆n边形