The printing is based on behind-the-scenes export to PDF so it is the generated PDF document that is actually sent to the printer.
打印的实际上是后台导出到PDF，因此实际上是后台生成的PDF文档被发送到打印机，而非网页显示的内容。
The posters are in PDF format – enabling you to easily download and print them using whichever paper size is in your printer.
这些招贴画是PDF格式的——你可以下载它们并使用适合你打印机的纸张打印。
Scientific and technical papers : articles in printer friendly PDF format or found on the Scientific Journals web sites;
科技论文： 可以轻松打印的PDF格式文章或者在一些科学期刊网站上的文章；
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