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

In order to build a collision model between black soldier fly larvae and key parts of collecting, transporting or separating equipment, a restitution coefficient measuring device based on biological nature of black soldier fly larvae and kinematics was designed, and the restitution coefficient of black soldier fly larvae was measured and analyzed by experiment.Research on the collision materials, the thickness of collision materials, falling height, collision angle, drop direction and moisture content of black soldier fly larvae’s effect on the restitution coefficient of the ‘the fifth age’ black soldier fly larvae was conducted by a mixed orthogonal experiment based on the scheme of L16(44×23). Then, single factor experiments for factors, including the collision materials, thickness of collision materials, falling height, collision angle, drop direction were carried out and the corresponding regression equations were obtained by analysis.Results of orthogonal experiments showed that the order of significance of restitution coefficient influencing factors was as follows: collision material, falling height, collision angle, drop direction, material thickness and moisture content. The influence of falling height and drop direction were extremely significant (P<0.01), and the influence of material thickness, material thickness and collision angle were significant (P<0.05), and the moisture content was not significant.Single-factor experiments were carried out for the following factors: collision material, material thickness, falling height, collision angle and drop direction. Regression equations were established between restitution coefficient and collision material, material thickness, falling height, collision angle and drop direction, with all the regression coefficients no less than 0.9427. Results of single-factor experiments of collision materials showed that restitution coefficient was decreased in the order as follows: Q235 steel, aluminum alloy, acrylic glass and rubber.From collision experiments of black soldier fly larvae with Q235 steel, restitution coefficient was decreased with the increase of falling height, increased with the increase of steel thicknesses and collision angle, and restitution coefficient was larger when the lateral fall of black soldier fly larvae collided with the steel than the vertical drop. Those results above can be an important reference in the designing and developing of collecting, transporting or separating equipment for black soldier fly larvae.