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

With controllable vibration damping systems installed at the original linkage and adopted parallel mechanism with six degrees of freedom (DOF) as its basic body, this device could perfectly resolve the problem of multi-DOF vibration damping and could overcome the characteristics of rubber's easily aging. Took instrument equipments and passengers in the navigational ships need vibration isolation as an example, the requirement of vibration isolation was analyzed, the kinematics simulation and vibration damping simulation have been done, and the effect of vibration damping was obvious. Moreover, the design method of related parameters was introduced. The analysis method can be use in other multi-dimension vibration damping devices, so there are theoretical and universal meanings for studying it.