concentric

US /kənˈsen.trɪk/
UK /kənˈsen.trɪk/
"concentric" picture
1.

同心的, 同轴的

of or denoting circles or spheres sharing the same center

:
The target has several concentric rings.
靶子有几个同心圆环。
The ripples spread out in concentric circles.
涟漪以同心圆的形式扩散开来。