国家协定税率制 conventional tariff: 协定关税; 协定税则, 协定税率agreement tariff; conventional tariff: 协定关税autonomous and conventional tariff: 自主协定税则制conventional tariff system: 协定关税制; 协定税则制general and conventional tariff: 国家协定税则; 普通协定税则下载手机词典可随时随地查词查翻译