concavities 

  1. 名詞
concavity複數: 凹面, 凹處
凹狀

    同義字詞
cavity,dent,depression,dint,hole,hollow,indentation,indenture,pit,recess

例句

  1. It presented a hundred strange facets, convexities, concavities .
  2. Concavities , troughs, and tubes observed on grain surfaces are the result of broken vesicle walls.
  3. With these approaches some concavities of an object (like the interior of a bowl) cannot be detected.
  4. Scrolling causes concavities in the paper, and the unrolling and rerolling of the scrolls causes creasing.
  5. To convert an engineer's square to a sensory square, the concavities can be opposed by positive stressing .