direct edge

 
  • 定向棱

direct edge的用法和樣例:

例句

  1. The curved edge at the junction of two intersecting vaults.
    穹棱肋在兩交叉的穹頂相接處的呈曲線狀的邊緣。
  2. He fell, striking his head on the edge of the table.
    他摔倒了,頭碰在桌棱上。
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