词汇	一场硬仗
释义	一场硬仗 a hard battle
随便看	radius of curvature in prime vertical radiusof curvature in the prime vertical radius of curvature method radius of curvature of a ray radiusof curvature of meridian radius of curvature of meridian radius of curvature of the earth radius of curve radius of damage radius of deformation radius of destruction radius of die radius of edge radius of equivalent circle radius of escribed sphere radius of excircles radius of exinscribed circles radius of fillet radius of flange radius of flange mouth arc radius of flight radius of flute radius of flute of tooth radius of Frensnel zone radius of Fresnel zone