LaTeX 错误:出现问题——可能是使用 {description} 时缺少 \item

LaTeX 错误:出现问题——可能是使用 {description} 时缺少 \item

我的代码的以下部分产生了以下错误!LaTeX 错误:出现错误 — — 可能缺少 \item。,但仍会生成我想要的输出 PDF。我使用的程序 Texmaker 会将光标移动到array我创建的第二个。

此外,我使用的部分flalign会产生以下警告段落第 16-18 行的 \hbox 未满(badness 10000)

以下代码是我编写的第一段 LaTeX 代码的一部分。我想知道我做错了什么,导致出现这些错误和警告。请告诉我可以改进的地方。


\documentclass[fleqn,10pt,pdftex]{article} 
\usepackage[margin=.75in]{geometry}
\usepackage{amsmath,amsthm,amssymb}

\begin{document}

\section{Loads on bus structure}
\subsection{Wind Loads}
\subsubsection{Wind load from IEEE Std 605, Section 11.2}


\begin{quote}
In the case of extreme wind speed (without ice), the wind load by unit length on a conductor (or a slender structure such as support or isolator) is given as follows:
\begin{flalign} \tag{8}
F_{W} = C V^{2} D_{o} C_{f} K_{Z} G_{f} I
\end{flalign}
where \\

\begin{description}
\begin{math}
\begin{array}{ll}
F_{W} & \mbox{  is the wind load by unit length, [lbf/in]} \\
C & \mbox{  is a constant, (British: 2.132 \(\times\) 10\textsuperscript{-4})} \\
V & \mbox{  is the extreme wind speed without ice, [mi/h]} \\
D_{o} & \mbox{  is the conductor outside diameter or the height of the profile used as conductor, [in]}\\
C_{f} & \mbox{  is the force coefficient} \\
K_{Z} & \mbox{  is the height and exposure factor} \\
G_{f} & \mbox{  is the gust response factor} \\
I & \mbox{  is the importance of the structure}
\end{array}
\end{math}
\end{description}

In the case of high wind with ice, the wind load by unit length on a conductor is given as follows:
\begin{flalign} \tag{9}
F_{WI} = C V^{2}_{I} (D_{o} + 2r_{I}) C_{f} K_{Z} G_{f} I
\end{flalign}
where \\

\begin{description}
\begin{math}
\begin{array}{ll}
F_{WI} & \mbox{ is the wind load with ice by unit length, [lbf/in]} \\
V_{I} & \mbox{  is the high wind speed with ice, [mi/h]} \\
r_{I} & \mbox{  is the equivalent uniform radial thicknesses of ice due to freezing rain, [in]} \\
G_{f} & \mbox{  is the gust response factor which is equal to 1.0 for ice and concurrent wind} \\
\end{array}
\end{math}
\end{description}

\end{quote}

\end{document}

答案1

以下 MWE 包含两种不同的可能性。第一种使用tabular并自动将第一列设置为数学模式,而第二种是普通文本。第二种变体使用环境description

\documentclass[fleqn,10pt]{article} 
\usepackage[margin=.75in]{geometry}
\usepackage{amsmath,amsthm,amssymb}
\usepackage{array}
\begin{document}

\section{Loads on bus structure}
\subsection{Wind Loads}
\subsubsection{Wind load from IEEE Std 605, Section 11.2}


\begin{quote}
In the case of extreme wind speed (without ice), the wind load by unit length on a conductor (or a slender structure such as support or isolator) is given as follows:
\begin{flalign} \tag{8}
F_{W} = C V^{2} D_{o} C_{f} K_{Z} G_{f} I
\end{flalign}
where 



\begin{tabular}{>{$}l<{$}l}
F_{W} &   is the wind load by unit length, [lbf/in] \\
C &   is a constant, (British: 2.132 \(\times\) 10\textsuperscript{-4}) \\
V &   is the extreme wind speed without ice, [mi/h] \\
D_{o} &   is the conductor outside diameter or the height of the profile used as conductor, [in]\\
C_{f} &   is the force coefficient \\
K_{Z} &  is the height and exposure factor \\
G_{f} &  is the gust response factor \\
I &  is the importance of the structure
\end{tabular}


In the case of high wind with ice, the wind load by unit length on a conductor is given as follows:
\begin{flalign} \tag{9}
F_{WI} = C V^{2}_{I} (D_{o} + 2r_{I}) C_{f} K_{Z} G_{f} I
\end{flalign}
where 

\begin{description}
\item[$F_{WI}$]  is the wind load with ice by unit length, [lbf/in] 
\item[$V_{I}$]   is the high wind speed with ice, [mi/h] 
\item[$r_{I}$]   is the equivalent uniform radial thicknesses of ice due to freezing rain, [in] 
\item[$G_{f}$]  is the gust response factor which is equal to 1.0 for ice and concurrent wind 
\end{description}

\end{quote}

\end{document}

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