ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

To enhance the efficiency and stability of dieface design, a parametric optimization method based on the template of section feature was proposed. The 2-D section feature was generally represented in NURBS form while its characteristics were systematically analyzed. Then, an optimization algorithm was designed with a simple and effective editing strategy. With the algorithm integrated into the independently developed DCiP forming analysis system, a comparison with HyperForm Die Module was made. The results showed that the proposed method could avoid abnormal problems, and had great ability to simplify user operations and shorten product design periods. 