但是如果是从图形文件转成的PDF,就不能那么容易拷贝,大概先要用光学辨识软件(OCR)辨识图形再转成编码的文字,这样才可以拷贝。一句话,不那么方便。
但是如果是从图形文件转成的PDF,就不能那么容易拷贝,大概先要用光学辨识软件(OCR)辨识图形再转成编码的文字,这样才可以拷贝。一句话,不那么方便。
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