An equatorial sundial is an ancient scientific equipment to tell time by using the shadow from solar projection. It consists of a sundial plate, a gnomon and a base.
赤道式日晷，是古人利用太阳投影测时的科学仪器，由晷盘、晷针和底座组成。
Finally, the method of equatorial horizon projection is used to analyze and calculate the sliding force and the resisting force in space.
最后运用赤平极射投影进行空间滑动力与阻抗的分析计算。
Finally, the method of equatorial horizon projection is used to analyze and calculate the sliding force and the resisting force in space.
最后运用赤平极射投影进行空间滑动力与阻抗的分析计算。
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