mtb_dcatadmin_plus/lang/en/dist-appearance-variable.php

<?php 
return [
    'labels' => [
        'DistAppearanceVariable' => 'DistAppearanceVariable',
        'dist-appearance-variable' => 'DistAppearanceVariable',
    ],
    'fields' => [
        'dist_id' => 'dist_id',
        'appearance_id' => 'appearance_id',
        'variable_name' => 'variable_name',
        'variable_value' => 'variable_value',
        'variable_type' => 'variable_type',
    ],
    'options' => [
    ],
];