In my Latex documents I usually include arrays and tables with fraction that always get crushed to their inline form, giving an unpleasant result. I know I could solve the issue by switching every \frac to \dfrac and adjusting the vertical spaces between lines manually, but I was wondering if there's a quicker and smarter way to solve this. I checked the array package but I didn't seem to find anything about this issue.

Here's a MWE of an array crushing fractions:

```
\documentclass{article}
\usepackage{amsmath, array}

\begin{document}

\begin{equation*}
\begin{array}{ll}
\frac{\partial T}{\partial \dot{x}}=m \dot{x}\quad \frac{d}{d t}\left(\frac{\partial T}{\partial \dot{x}}\right)=m \ddot{x}\quad \frac{\partial T}{\partial x}=0 \\
\frac{\partial T}{\partial \dot{y}}=m \dot{y}\quad \frac{d}{d t}\left(\frac{\partial T}{\partial \dot{y}}\right)=m \ddot{y}\quad \frac{\partial T}{\partial y}=0 \\
\frac{\partial T}{\partial \dot{z}}=m \dot{z}\quad \frac{d}{d t}\left(\frac{\partial T}{\partial \dot{z}}\right)=m \ddot{z}\quad \frac{\partial T}{\partial z}=0
\end{array}
\end{equation*}

\end{document}

```

EDIT:
What I'm looking for (not sure it exists) is an environment, or a "declaration" valid through the whole environment, switching every math element to \displastyle, just like the \dcases environment for the regular \cases one.