Keywords PC 3D geometry modeling,STL,rapid prototype,accuracy,surface roughness,contact angle,residual ash content,heat expansion coefficient,precision casting process,metal functional exemplar;

• 微机三维几何造型;STL;快速原型;精度;表面粗糙度;接触角;残余灰分;膨胀系数;精铸成形工艺;金属功能样件;