The bright red bowl, or arc, seen in this image traces the outer surface of the dense dust cloud encasing the young stars.
图中可见红色的弧形，它是一层致密气体的外层表面，这层气体则遮盖着那些年轻的恒星。
2
Where misalignment between the inner and outer rings exceeds 1 minute of arc, the action of the load on the flange changes considerably.
内圈和外圈之间的不对中超过1分弧时，作用在法兰上的载荷会发生相当大的变化。
3
Inspired by women's bracelets, the arc wraps around the outer surface creating a sense of security but also a glamorous detail noticeable at a distance.