Semi automatic to manual equation legend in LaTeX with glossaries

MWE_auto_eq

\documentclass[leqno]{scrartcl}

\usepackage{lipsum}
\usepackage[]{glossaries}
\newglossary[slg]{symbols}{slm}{sbl}{List of Symbols}

% IMPORTANT -----------------------------------------------------------------------------------
% add [makeindex.exe -s "%tm.ist" -t "%tm.slg" -o "%tm.slm" "%tm.sbl"] to your compile run ------
%----------------------------------------------------------------------------------------------

\newglossaryentry{sym:deg}{  
type=symbols,  
name={$\dot{D}$},  
description={Prozentuale jährliche Abnahme des Wirkungsgrades},  
user1={\%/a},  
sort=deg  
}  

\newglossaryentry{sym:etadegr}{
type=symbols,
name={$\eta_{Deg,r}$},
description={Verbleibender Wirkungsgrad bezogen auf den ursprünglichen Wirkungsgrad},
user1=\%,
sort=eta deg rest
}

\newglossaryentry{sym:tau}{
type=symbols,
name={$\tau$},
description={Lebenszyklus / Einsatzdauer des betrachteten Systems},
user1=a,
sort=tau
}

%Command
\newcommand{\items}[1]{\glstext*{#1} & \glsdesc*{#1} [\glsuseri*{#1}] \\}

%--------------------------------------------------------------------------

\begin{document}

\lipsum[1]


This is equation \ref{eq:deg}
\begin{align}  
    \dot{D} = \frac{1-\eta_{Deg,r}}{\tau} \label{eq:deg}  
\end{align}

\lipsum[1]


This is the corresponding legend.\\


%Legend Environment
\begin{tabular}{@{} p{1cm} p{0.9 \textwidth}}
    \items{sym:deg}
    \items{sym:etadegr}
    \items{sym:tau}
\end{tabular} \\

\lipsum[1]

\end{document}