知乎 - 有问题，就会有答案
知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。知乎凭借认真、专业 …
html - When to use <p> vs. <br> - Stack Overflow
14 You want to use the <p> tag when you need to break up two streams of information into separate thoughts. <p> Now is the time for all good men to come to the aid of their country. …
知乎 - 有问题，就会有答案
知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。知乎凭借认真、专业 …
知乎 - 知乎
知乎是一个中文互联网高质量问答社区和创作者聚集的原创内容平台，提供知识共享、互动交流和个人成长机会。
%p Format specifier in c - Stack Overflow
Sep 28, 2012 · If this is what you are asking, %p and %Fp print out a pointer, specifically the address to which the pointer refers, and since it is printing out a part of your computer's …
html - When to use <span> instead <p>? - Stack Overflow
Dec 15, 2009 · The <p> tag is a p aragraph, and as such, it is a block element (as is, for instance, h1 and div), whereas span is an inline element (as, for instance, b and a) Block elements by …
P-end-tag (</p>) is not needed in HTML - Stack Overflow
Feb 23, 2016 · 49 P-end-tag is only required in XHTML, not in HTML. Correct But some times you have to close it any way eg. when you align the paragraph left/right/center. Incorrect.
F-P谐振腔的实际应用是什么，工作原理是什么？ - 知乎
F-P谐振腔是法布里-珀罗（Fabry-Pérot）谐振腔的简称，它是由两个平行的反射镜构成的光学谐振腔。 F-P谐振腔在光学和激光领域有着广泛的应用，用于光学干涉、激光器、传感器、光谱学 …
关于财务会计里面的P/A和P/F是什么意思？ - 知乎
A是年金（Annual）， P是现值 (Present)， F是终值 (Final)，都是各个单词的首字母； P/A是已知年金求现值； P/F是已知终值求现值 1⃣️P/A指的是年金现值，如果现金流量有多期，且每期 …
Named regular expression group " (?P<group_name>regexp)": …
Apr 8, 2012 · Named regular expression group " (?P<group_name>regexp)": what does "P" stand for? Asked 13 years, 6 months ago Modified 4 years, 10 months ago Viewed 296k times