这里的问题是，在这个表格的第三列中，单词之间突然出现了多余的空格。我不知道为什么会发生这种情况。谁能帮我解决一下？
当然也欢迎其他改进；我仍在学习乳胶。
梅威瑟：
\documentclass[11pt]{article}
\usepackage[
textwidth=155mm,
top=23.5mm,
bottom=23.5mm,
footskip=40pt,
heightrounded,
]{geometry}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lmodern} % math & rm
\usepackage{microtype}
\usepackage{threeparttable}
\usepackage{threeparttablex} %
\usepackage[table,xcdraw]{xcolor}
\usepackage[skip=0.33\baselineskip]{caption}
\usepackage{array}
\usepackage{booktabs,makecell}
\usepackage{tabularx}
\begin{document}
\begin{table}[H]
\caption{List of variables}
\begin{threeparttable}
\renewcommand{\arraystretch}{1.3}
\begin{tabular}{l p{7cm} p{3cm} p{2cm}} %%zxqdcolumn
\toprule
\multicolumn{1}{l}{Variable} & \multicolumn{1}{l}{Explanation} &
\multicolumn{1}{l}{Measure of} & \multicolumn{1}{l}{Source} \\
\midrule
\multicolumn{4}{c}{\textbf{Dependent variables}} \\
\rule{0pt}{1ex}
$Y^n_{eu,t}$ & Yield on a 10-year zero coupon government bond of an eurozone country in the sample & & Datastream \\
$Y^n_{us,t}$ & Yield on the 10-year US zero coupon government bond & & Datastream \\
$R^n_{eu,t}$ & 10-year Overnight Index Swap rate of the EU & & Datastream \\
$R^n_{us,t}$ & 10-year Overnight Index Swap rate of the US & & Bloomberg
\\\multicolumn{4}{c}{\textbf{Control variables}} \\
\rule{0pt}{1ex}
$VSTOXX$ & Implied volatility of near term options on the EuroStoxx 50 index (eurozone equivalent of the VIX) & Euro-area risk aversion & Datastream \\
$CDS$ & 10-year credit default swap of an eurozone country in the sample. Defined in Datastream as ''the mid-rate spread between the entity and the relevant benchmark curve'' & Country specific credit risk & Datastream \\
$Redom$ & Redenomination risk. Calculated as the difference between the 5-year CDS of an eurozone country dominated in dollars minus the 5-year CDS dominated in Euro of that same country (this is called the quanto CDS), and quanto CDS of Germany ($Qcds_{t}$-$Qcds_{t_{Ger}}$) & Redenomination risk & Bloomberg \\
$CESI_{j}$ & The Citigroup Economic Surprise Index (CESI) measures the surprise content of the release of macroeconomic and fiscal news (not monetary policy news) on a daily basis. A positive value indicates a positive surprise. $j \in us,eu$. & Macro-economic news & Datastream \\
$ECB$ & Impulse dummies which equal 1 on ECB UMP announcement days and 0 otherwise. See also Table A.2 in Appendix A.2. & UMP announcements of the ECB & ECB website \\
\bottomrule
\end{tabular}
\begin{tablenotes}[para,flushleft]\scriptsize{
\item \textbf{Notes}: Rates and yields are measured in basis points. The variables $Y^n_{eu,t}$, $CDS$, $BAS$ and $Redom$ are collected for each eurozone country in the sample. The other variables are time-series observations.}
\end{tablenotes}
\end{threeparttable}
\end{table}
\end{document}
答案1
主要建议：
- 为了抑制第三列材料的完整对齐，请替换
p{3cm}为>{\raggedright\arraybackslash}p{3cm}。
进一步的建议（无特定顺序）：
也禁止第二列的完全对齐。要允许第 2 列和第 3 列中的单词连字，请加载
ragged2e包并指定\RaggedRight而不是\raggedright。没有必要使用大量的
\multicolumn{1}{l}{...}包装。似乎没有必要进行
threeparttable设置。不要直接用数学模式书写——TeX 会将其解释为变量、、、和
VSTOXX的乘积。我建议你设置一个辅助宏，比如说，——“变量名”的缩写——如下所示VSTOXX\vname\newcommand{\vname}[1]{\mathrm{#1}} % or: \mathit并将所有变量名称放入
\vname包装器中。l对最后一列使用一种列类型。不要使用大胆的对于两个中间标题，并将它们左对齐，而不是居中。
使用
tabular*环境而不是tabular环境，并将表格*的宽度设置为\textwidth。不要使用环境
H的放置说明符table——它几乎肯定会在表格之前的页面上创建一个巨大的空白。相反，使用放置p说明符，将其单独放置在页面上。
table如果实施了上述所有建议，您的情况将如下所示：
\documentclass[11pt]{article}
% I've simplified preamble to bare minimum
\usepackage[textwidth=155mm,vmargin=23.5mm, footskip=40pt,
heightrounded]{geometry}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\usepackage{microtype}
\usepackage[skip=0.33\baselineskip]{caption}
\usepackage{booktabs,array,ragged2e}
\newcommand{\vname}[1]{\mathrm{#1}} % or: \mathit
\begin{document}
\begin{table}[p] % not "H"!
\renewcommand{\arraystretch}{1.3}
\setlength{\tabcolsep}{0pt} % let LaTeX figure out intercolumn whitespace
\caption{List of variables}
\begin{tabular*}{\textwidth}{@{\extracolsep{\fill}}
l
>{\RaggedRight\arraybackslash}p{7cm}
>{\RaggedRight\arraybackslash}p{3cm}
l}
\toprule
Variable & Explanation & Measure of & Source \\
\midrule
\multicolumn{4}{l}{Dependent variables} \\
$Y^n_{eu,t}$ & Yield on a 10-year zero coupon government bond of a eurozone country in the sample & & Datastream \\
$Y^n_{us,t}$ & Yield on the 10-year US zero coupon government bond & & Datastream \\
$R^n_{eu,t}$ & 10-year Overnight Index Swap rate of the EU & & Datastream \\
$R^n_{us,t}$ & 10-year Overnight Index Swap rate of the US & & Bloomberg \\
\addlinespace
\multicolumn{4}{l}{Control variables} \\
$\vname{VSTOXX}$ & Implied volatility of near term options on the EuroStoxx 50 index (eurozone equivalent of the VIX) & Euro-area risk aversion & Datastream \\
$\vname{CDS}$ & 10-year credit default swap of an eurozone country in the sample. Defined in Datastream as ``the mid-rate spread between the entity and the relevant benchmark curve'' & Country specific credit risk & Datastream \\
$\vname{Redom}$ & Redenomination risk. Calculated as the difference between the 5-year CDS of an eurozone country dominated in dollars minus the 5-year CDS dominated in Euro of that same country (this is called the quanto CDS), and quanto CDS of Germany ($\vname{Qcds}_{t}-\vname{Qcds}_{t_{\vname{Ger}}}$) & Redenomination risk & Bloomberg \\
$\vname{CESI}_{j}$ & The Citigroup Economic Surprise Index ($\vname{CESI}$) measures the surprise content of the release of macroeconomic and fiscal news (not monetary policy news) on a daily basis. A positive value indicates a positive surprise. $j\in\{us,eu\}$. & Macroeconomic news & Datastream \\
$\vname{ECB}$ & Impulse dummies which equal $1$ on ECB UMP announcement days and~$0$ otherwise. See also Table A.2 in Appendix~A.2. & UMP announcements of the ECB & ECB website \\
\bottomrule
\addlinespace
\end{tabular*}
\footnotesize
\textbf{Notes} Rates and yields are measured in basis points. The variables $Y^n_{eu,t}$, $\vname{CDS}$, $\vname{BAS}$ and $\vname{Redom}$ are collected for each eurozone country in the sample. The other variables are time series observations.
\end{table}
\end{document}