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1.The astronaut used a heliomicrometer to measure the sun's position in space.
宇航员使用太阳高度计测量了太空中的太阳位置。
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2. The heliomicrometer was used to calculate the angle between the sun and the Earth.
太阳高度计被用来计算太阳与地球之间的夹角。
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3. Heliomicrometers are essential tools for astronauts during long-duration space missions.
在长时间的太空任务中,太阳高度计是宇航员们必不可少的工具。