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。
All of the zero-gravity scenes in the movie Apollo 13 were filmed during these flights.
电影阿波罗13号中的所有失重场景都是在这里拍摄的。
All of the zero-gravity scenes in the movie Apollo 13 were filmed during these flights.
电影阿波罗13号中的所有失重场景都是在这里拍摄的。
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