Profile of PVC condole top is empty, both sides is between honeycomb shape is enclosed sheet, has the processing molding tongue-and-groove and convex great.
PVC吊顶型材是中间为蜂巢状空洞、两边为封闭式的板材，有加工成型的企口和凸棒。
2
The special meshing of convex and concave teeth profile makes the relative radius of curvature of the contacting point longer.
独特的凸凹啮合齿廓，使两齿轮在接触点处的综合曲率半径较大。
3
A molding for a cornice, having a partly concave and partly convex curve in profile, used especially in classical architecture.