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

30%,。The results of the recent separating-lanting mechanism were first taken into consideration. This mechanism increased its rotational speed to improve its operational efficiency; yet by increasing the velocity of the needle of the separating-lanting bar, it increased the seeding injury rates at the same time. As a result, a newly designed mechanism, as well as studies on its affect on the survival and growth of rice, was introduced. The new type of separating-lanting mechanism had three separating planting bars with an elliptic plant gear system of high-erformance rice transplanters. Adding an additional separating planting bar kept the high operational efficiency of the rice transplanter while slowing the rotational speed to decrease seeding injury rate. Its kinematic model was established on the basis of transmission analyses of planetary elliptic gears systems; 3-D models were established by SolidWorks and the kinematics simulation was analyzed by ADAMS. Under the condition of the same operating efficiency, the speed decreased by 30%.