摘要:
```
\documentclass[10pt,UTF8]{article}
\usepackage{ctex}
\usepackage{amssymb,amsmath,multicol,titlesec}
\usepackage[round]{natbib}
\usepackage[hmargin = 1in, vmargin = 1in]{geometry}
\renewcommand{\re... 阅读全文
posted @ 2019-05-22 23:38
pprp
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