radially       
adverb uk/ˈreɪ.di.ə.li/ us/ˈreɪ.di.ə.li/
 辐射状地;放射状地;辐式地
in a way that spreads out from a central point
  Items in the diagram are arranged radially around a central key word or idea. 图中的各个项目围绕着一个中心关键词或想法呈放射状排列。 
 Cracks formed radially near the rim where the brakes were applied. 在刹车的边缘附近形成了径向裂缝。 
 See: radial
 - More examples
 - Gravitational field lines spread out radially from the centre of the Earth.
 - Incoming winds prevented the fire from spreading radially outwards.
 - Corridors extended radially from the centre.