annulus disk

• 圆盘

annulus disk的用法和样例：

例句

1. The resulting object is a rotationally supported disk.
   结果便形成了一个由转动所支撑的圆盘。
2. The solar system began as a disk of dust and gas swirling around the young sun.
   太阳系一开始是一个由灰尘和气体组成的圆盘，围绕年轻的太阳旋转。