yuanshan/application/admin/lang/zh-cn/productroad.php

<?php

return [
    'Id'           => 'ID',
    'Roadname'     => '路线名',
    'Product_id'   => '产品id',
    'Roadtype'     => '类型',
    'Roadtype 1'   => '去程',
    'Roadtype 2'   => '返程',
    'Roadtype 3'   => '往返',
    'Product.name' => '主标题'
];