frictional vibration造句

例句与造句

1. Since frictional vibration damages a mechanical system ’ s performances when the system works at a low velocity , efficient antifriction techniques are the key tasks that have been seeking after all along
   一个机械系统低速运行时,影响性能的一个重要问题就是摩擦振动的存在。学者们在不断的探寻高效的润滑技术来减小摩擦,实现机械系统的低速平滑运动。
2. It's difficult to find frictional vibration in a sentence. 用frictional vibration造句挺难的