英文欣赏之人生感悟 (102)机械工程师的任务 Roles for the Mechanical Engineer
Roles for the Mechanical Engineer 机械工程师的任务 Do you realize that every time you take a step,the bones in your hip are subjected to forces between four and five times your body weight? 你是否意识到,你每走一步路,你臀部的骨骼在承受四五倍于你体重的力量? When you are running, this force is increased further still. 跑步的时候,这种力量还会更大。 What happens if through di...