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

PXSB two-ways step running complete fluidic rain gun is a new type of large-middle rotary sprinkler. The key component of the sprinkler, fluidic element, provides the driving force and controls the movement of the sprinkler based on Coanda effect. Hydraulic performance of the rain gun was tested. The main influencing factors to the range, height and rainfall distribution were analyzed. The influences of the working pressure and the structure parameters on the main hydraulic performance of the rain gun under its working states have been obtained by the experiments. The best geometrical size was achieved at the experiments, which provided a basis in building the design method of the twoways step running complete fluidic rain gun. A comparison of hydraulic performance was made between the complete fluidic rain gun and the other largemiddle rotary sprinkler. According to the results, the twoways step running complete fluidic rain gun has better performance than the others. 