weightlessness例句
Astronauts in flight must adjust to
weightlessness.
宇航员在飞行中得适应失重状态.
Objective To observe bone mass changes during convalescence after simulated
weightlessness.
目的观察模拟失重恢复期骨质的变化.
To apply engineering Methods : To the study of astronaut adaptation to
weightlessness.
应用 工程方法 于宇航员在无重状态下的适应性研究.