RT,IET杂志下面对E-first的描述是The IET have now introduced an e-first publication service for our authors and readers where, once papers are ready for publication, they will appear online on the IET Digital Library (http://digital-library.theiet.org/content/journals) in advance of print publication.有几点想请教下各位,1) 这个e-first的网上发表,和有正式online-ISSN号码的网上发表是什么区别?2) 想问的是一般文章接收并修改好proof之后,网上发表和纸质印刷有严格先后顺序吗?3) 另外网上先发表了是否更好呢?一般有什么用?初次投稿不是很懂,谢谢各位解答哈!