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P标，就是经常看到的符号℗，是英文phonogram（唱片）的简写，代表录音制作者版权所有声明。 P标只用于实体唱片，在今天的互联网流媒体音乐时代已经不太常见了。 因此赵律师特意找了 …

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我举个栗子， 发详细修改步骤，希望可以帮到你~ ①拿出我在【第一PPT】网站立下载的一个PPT为例，左下角显示的【第一PPT， www.1ppt.com】 ②修改的方法需要找到【视图】-【 …

尤其是Molecules期刊，领域内名气和认可度怎样？其他的期刊也可分享。