concentric

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

同心的, 同軸的

of or denoting circles or spheres sharing the same center

:
The target has several concentric rings.
靶子有幾個同心圓環。
The ripples spread out in concentric circles.
漣漪以同心圓的形式擴散開來。