利用单元刀片形成的凸座增加防变形强度，而能采用较薄的钢板来冲裁，降低材料成本。
The protuberant bases formed by utilizing the unit knife blades increase the anti-deformation intensity, can adopt thinner steel plates for blanking, and reduce the cost of materials.
阿曼一座新月形的沙丘脊由强信风吹成，在迎风的方向（图左侧）形成一面平缓的凸破，在背风面形成凹坡。
This crescent-shaped ridge of sand dune in Oman was formed by strong trade winds that form a smooth hill facing the wind (left) and concave slipface on the back.
通过改进拉伸凸模结构，提高球面轴承座模具加工质量。
Through improving the punch structure, improved the spherical surface bearing housing die machining quality.
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