The utility model provides a multi-functional neutral pen which can fluently write under the zero gravity state or when the gravity does not point to the component force of a pen point.
本实用新型提供一种多功能中性笔，使其在失重状态或重力无指向笔尖分力时也可流利书写。
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.
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.
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。
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