1)pivot area,旋转面积2)propeller disk area,螺旋桨旋转面积3)rotating surface area,旋转曲面面积4)the side space of a revoling substance,旋转体的侧面积5)surface of revolution of least area,最小面积的旋转曲面6)rotary separator area,旋转式分离器面积
用法例句
A calculating method of the rotating surface area;