短語(yǔ)詞組短語(yǔ)convex curved surface 凸曲面convex aspherical surface 凸非球面large convex aspheric surface 大口徑凸非球面Convex closed surface 凸閉曲面convex curve surface 拱度complicated convex curved surface 異形凸曲面Convex aspheric surface 凸非球面convex -surface oval shape 凸表面的橢圓形的形狀 返回 convex surface