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

Research progress and features of various end-effectors for fruit-vegetable harvesting are reviewed. It is pointed out that the conflict between the universal applicability of the end-effectors for fruit-vegetable harvesting and system cost as well as application cost is a main factor restricting the future development and application of fruit-vegetable harvesting robot in China. The underactuated multi-fingered hand is proposed as the end-effector for fruit-vegetable harvesting, and then a detailed review of the research progress of underactuated multi-fingered hand is presented. The feasibility of using the underactuated multi-fingered hand in fruit-vegetable harvesting is illustrated in terms of mechanism features, grasping modes and comprehensive costs.