radius astronomicus造句
造句与例句
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- The Jacob's staff, when used for astronomical observations, was also referred to as a "'radius astronomicus " '.
- Horrocks owned a three-foot " radius astronomicus " a cross staff with movable sights used to measure the angle between two stars but by January 1637 he had reached the limitations of this instrument and so built a larger and higher precision version.
- It's difficult to see radius astronomicus in a sentence. 用radius astronomicus造句挺难的
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