concentric arc
常见例句
- This motion, called diurnal motion, produces the beautiful concentric arcs traced by stars during long time exposures.
这种运动称作“周日视运动”，在长时间曝光后就会拍到由星星轨迹构成的美丽同心圆弧。
jishenhua.jn.blog.163.com - During that time, stars trailed through the night sky above Vancouver, their steady motion along concentric arcs a reflection of planet Earth's rotation.
看，恒星在夜空弯成一道道弧，它们平稳地运动着，仿佛告诉我们不要忘记地球在自转。
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