| 释义 |
失重shī∥zhòng物体失去原有的重量。是由于物体在高空中所受地心引力变小或由于物体向地球中心方向作加速运动而引起的。如升降机开始下降时就有失重现象。{weightlessness; zero gravity; loss of gravity; phenomenon of an object losing its original weight, caused by the reduction of the earth's gravitation at high altitude or accelerated motion towards the centre of the earth, e.g. the loss of gravity when an elevator starts to descend} |