答案1
新答案
\documentclass[border=5mm,tikz]{standalone}
\begin{document}
\tikzset{
doublesided/.pic={
\draw[<->](-.4,0)--(.4,0);
\draw[<->](0,.4)--(0,-.4);
}
}
\begin{tikzpicture}[]
\draw (0,0)grid(5,3);
\foreach \i in {0,...,4}
\foreach \j in {0,...,2}{\pic at (\i+.5,\j+.5){doublesided};
}
\end{tikzpicture}
\end{document}
旧答案
像这样?
\documentclass[border=5mm,tikz]{standalone}
\begin{document}
\begin{tikzpicture}[]
\draw[<->](-.5,0)--(.5,0);
\draw[<->](0,.5)--(0,-.5);
\end{tikzpicture}
\end{document}