添加学习PDB文件的文档，并删除CIF文件相关文档

_exp/2025-01-14-pdb-files.md

@@ -0,0 +1,37 @@
+---
+layout: exp
+title:  "Learning PDB files"
+date:   2025-01-14
+categories: jekyll update
+---
+
+# 1.标题
+----------
+
+HEADER|OBSLTE|TITLE|SPLT|CAVEAT|SOURCE|KEYWDS|EXPDTA|MDLTYP|REVDAT|SPRSDE|JRNL|REMARKS
+
+----------
+
+You’ll find this post in your `_posts` directory. Go ahead and edit it and re-build the site to see your changes. You can rebuild the site in many different ways, but the most common way is to run `jekyll serve`, which launches a web server and auto-regenerates your site when a file is updated.
+
+Jekyll requires blog post files to be named according to the following format:
+
+`YEAR-MONTH-DAY-title.MARKUP`
+
+Where `YEAR` is a four-digit number, `MONTH` and `DAY` are both two-digit numbers, and `MARKUP` is the file extension representing the format used in the file. After that, include the necessary front matter. Take a look at the source for this post to get an idea about how it works.
+
+Jekyll also offers powerful support for code snippets:
+
+{% highlight ruby %}
+def print_hi(name)
+  puts "Hi, #{name}"
+end
+print_hi('Tom')
+#=> prints 'Hi, Tom' to STDOUT.
+{% endhighlight %}
+
+Check out the [Jekyll docs][jekyll-docs] for more info on how to get the most out of Jekyll. File all bugs/feature requests at [Jekyll’s GitHub repo][jekyll-gh]. If you have questions, you can ask them on [Jekyll Talk][jekyll-talk].
+
+[jekyll-docs]: https://jekyllrb.com/docs/home
+[jekyll-gh]:   https://github.com/jekyll/jekyll
+[jekyll-talk]: https://talk.jekyllrb.com/