The Copyright

I've translated the contents of hydrogenium and helium into simplified Chinese from your site but not published on anywhere. I want to get the permission from the author in order to submit it on the Internet. Could I?
You can download the attachment, but you should change the extension into ".zip" before you open it.

The address of the attachment:、H.pdf

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why must i change the

why must i change the extension in to zip?

Before I upload the

Before I upload the attachment, I've changed the extension
from "zip" into "pdf" because of the limitation of the extension of the files. You may not open the contents unless you change back the extension.

WebElements: the periodic table on the WWW []

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