perforated card,punchcard paper是什么意思


中文翻译打孔卡片纸

网络释义

1)perforated card,punchcard paper,打孔卡片纸2)perforation,打孔3)drilling,打孔4)perforating,打孔5)laser drilling,激光打孔6)Drilled pipelines,打孔管道

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