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

Based on the principle of water volume balance, by generalizing the surface water profile and Philip infiltration formula equivalent for Kostiakov model when infiltration parameter α=0.5, the model of synchronously determining Philip infiltration parameters and synthesis roughness according to the advance of border irrigation water was set up. The values of infiltration parameters and roughness were obtained under the different figure coefficient of surface storage σh, some research results and field experiments testified, by using the software of Matlab to solve the model. Then these parameters were confirmed, the results showed that synchronously determining Philip infiltration parameters and synthesis roughness were reliable. The study indicates that the analytic model has some advantages, such as simple calculation method and solution, higher accuracy.