At the start of the movie, an arc of plasma arises close to the surface and balloons outward into space.

影片开始时，等离子体的弧线上升接近太阳表面并向太空膨胀。

Obstacle-free sector is a sector formed by an arc originating at the reference point of the edge of a helideck and extending outward in the horizontal plane level with the elevation of the helideck.

无障碍区域是由一个起于直升机甲板边缘的基准点并在直升机甲板的水平面向外延伸的弧形所形成的区域。

An aequilate baffle plate is welded on the front part of the arc-shaped steel plate to prevent transplanted bone blocks from outward sliding.

弧形钢板的前部焊接一等宽挡板，可防止移植的骨块向外滑动。