single foramen

  • 单孔

single foramen的用法和样例:

例句

  1. Weld identification single hole punch.
    鉴别焊缝的单孔冲压机。
  2. It was a steel bridge of a single span and there was a sentry box at each end.
    那是一座单孔铁桥,两端各有一个岗亭。
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