1938年杰克·宾得（作为一个艺术家而闻名）第一次使用“零重力”，事实上是指地球核心的无重力状态。
The first known use of "zero-gravity" is from Jack Binder (better known for his work as an artist) in 1938, and actually refers to the gravityless state of the center of the Earth's core.
在无重力的状态下吃饭、睡觉；穿上太空衣在宇宙中漫步、修复人造卫星，一定是很有趣的经验。
Imaging that you are on a space mission and you have to sleep in zero gravity , help fix a satellite , and build a factory in orbit.
无扰动的流体静力平衡状态下的地球重力场是平行重力场。
Undisturbed earths gravity field under the status of hydrostatic equilibrium is parallel gravity field, and its distribution of mass density is spherically Symmetric.
应用推荐