The present invention has the features of wide processing hole aperture range, easy regulation of processing hole aperture, high processing efficiency, low cost, etc.
本发明具有加工孔径适应范围广、加工孔径尺寸可定量调整，加工效率高、所需成本低等特点。
The present invention has the features of wide processing hole aperture range, easy regulation of processing hole aperture, high processing efficiency, low cost, etc.
本发明具有加工孔径适应范围广、加工孔径尺寸可定量调整，加工效率高、所需成本低等特点。
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