The multi-functional neutral pen integrates normal writing, and supineness writing.
这支多功能中性笔整合了普通书写和仰卧书写功能。
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。
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