radial  
 adjective uk/ˈreɪ.di.əl/ us/ˈreɪ.di.əl/
  (FROM CENTRE)        
  辐射状的;放射状的;辐式的
spreading out from a central point
  a radial road system 辐射状的道路系统 
  medical specialized(身体)中心区域的 
relating to the area around the central part of the body
   (ARM)      
 medical specialized桡骨的 
relating to the radius (= the thicker of the two bones in the lower arm)
  the radial artery 桡骨动脉 
 radial      
noun [ C ] uk/ˈreɪ.di.əl/ us/ˈreɪ.di.əl/ (UK also radial tyre); (US also radial tire)
 辐射式轮胎,子午线轮胎
a tyre that has strings inside the rubber that go across the edge of the wheel at an angle of 90° rather than along it