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

The plant fiber tableware dry-hot forming process was optimized by response surface methodology. Three independent variables, such as molding pressure, molding temperature and molding time have significant effects on the appearance quality of tableware. A three-factor quadratic regression rotation combination design was employed to study the response, and the interaction of the factors on the appearance quality was also investigated. By analyzing the response surface, a polynomial regression equation was obtained and the optimal conditions of dry-hot forming process were gained, they are: molding temperature of 181℃, molding pressure of 18MPa, and pressure duration time of 9s.