screen/application/admin/lang/zh-cn/coupon.php

<?php

return [
    'Type'       => '类型',
    'Max'        => '满多少才可用',
    'Amount'     => '金额',
    'Start_time' => '开始时间',
    'End_time'   => '到期时间',
    'Num'        => '数量'
];