A similar process occurs on a much smaller scale to gas surrounding a single star, forming the bow-shaped arc seen near the upper left side of the Cone.
类似的过程以小得多的规模发生在锥状星云左上方的一个恒星周围，形成了一个弧形光晕。
A staircase at the center of the arc provides circulation between the upper and lower levels.
在场地的圆弧中心设置了一个楼梯供上下两块场地之间的流通。
Are there any visible arc marks on upper surfaces LPS rods?
避雷针的上部表面是否有可见的电弧放电痕迹？
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