用法：标注中列出多个作者并且最后一个作者前用和与&符号连接

[hushidong]

示例如下：

\documentclass[twoside]{article}
    \usepackage{ctex}
    \usepackage{fontspec}
    \usepackage{xcolor}
\usepackage[backend=biber,style=gb7714-2015ay,maxcitenames=3]{biblatex}%,gbalign=gb7714-2015
\makeatletter
\DefineBibliographyStrings{english}{
        andincitecn = {\str@andcn},%将标注中的分开，便于与文献表中的区分
        andincite   = {\&}}

\DefineBibliographyExtras{english}{\def\finalandcomma{}}%
\makeatother

\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@ARTICLE{DUBAR2013--,
  author       = {DUBAR, K L.  and MITCHELL, D A. and DUBAN, LUCY},
  title        = {Revealing nature's synthetic potential through the study of ribosomal natural product biosynthesis},
  Journaltitle = {ACS chemical biology},
  DATE         = {2013},
  VOLUME       = {8},
  pages        = {473-487},
  url          = {http://pubs.acs.org/doi/pdfplus/10.1021/cb3005325},
  urldate      = {2013-10-16}
}

@ARTICLE{DUBAR2008--,
  author       = {DUBAR, K L.  AND MITCHELL, D A.},
  title        = {A study on online pharmaceutical operating situation and supervision mechanism},
  Journaltitle = {Shanghai food and drug information research},
  DATE         = {2008},
  number       = {1},
  pages        = {8-11},
}

@ARTICLE{关立哲2014--,
  author       = {关立哲 and 韩纪富 and 张晨延},
  title        = {科技期刊编辑审读中要注重比较思维的科学运用},
  Journaltitle = {编辑学报},
  DATE         = {2014},
  VOLUME       = {26},
  number       = {2},
  pages        = {144-146}
}

@ARTICLE{关立哲2005--,
  author       = {关立哲 and 韩纪富 and 张晨延},
  title        = {从交易费用的角度谈如何构建药品流通的良性机制},
  Journaltitle = {中国物价},
  DATE         = {2005},
  number       = {8},
  pages        = {42-45},
}

\end{filecontents}

\addbibresource{\jobname.bib}

\usepackage[colorlinks=true,citecolor=magenta]{hyperref}

\begin{document}

\citet{关立哲2005--,DUBAR2013--}

\printbibliography
\end{document} 

结果为：