在数学模式中添加新行

Question

我尝试records with在数学模式后强制添加新行。在这种情况下我该怎么做？我试过，但\n没有成功。

\documentclass[
    english,
    german,
    11pt,
    twoside,
    a4paper,
    headsepline,
    footsepline
]{scrbook}

\usepackage{amsmath}

\begin{document}


 After counting 6 records with the same stop\_name whereby 
 $behaviour\_id_{~records~ with~ the~ same~  stop\_name} > 
 behaviour\_id_{~min ~distance~ record}$, the speed average 
 of all these records is calculated. So in the case that the 
 speed average was less than 

\end{document}

Answer 1

您要编写的公式只有一个可行的断点，位于符号后>。没有真正的方法可以将其内联打印，因为正如您所见，它大约只有一行长；我看到的唯一方法是显示它。如果您希望读者理解您正在写的内容，那么在下标中间断点绝对不是一个选择。

请注意，变量应始终以相同的方式排版，并且文本下标应直立。

\documentclass[
    11pt,
    twoside,
    a4paper,
    headsepline,
    footsepline
]{scrbook}
\usepackage[T1]{fontenc}
\usepackage{amsmath}

\newcommand{\var}[1]{\textit{#1}}

\begin{document}

After counting 6 records with the same \var{stop\_name} whereby
\[
\var{behaviour\_id}_{\,\textup{records with the same \var{stop\_name}}} >
\var{behaviour\_id}_{\,\textup{min distance record}},
\]
the speed average of all these records is calculated. So in the case
that the speed average was less than

\end{document}

Answer 2

尽管我不建议您这样做，但您可以尝试\substack（包含在amsmath包中）：

$behaviour\_id_{\substack{records~ with\\ the~ same~  stop\_name}} > 
behaviour\_id_{~min ~distance~ record}$