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prepunch meaning in Chinese

预先穿孔
预先凿中心孔

Examples

  1. Sheet metal rim holes with screw thread ; prepunch hole diameters
    带螺纹的金属薄板凸缘孔.预冲孔直径

Related Words

  1. prepunch card
  2. prepulsing
  3. prepump
  4. prepunch card
  5. prepunched
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