基本解释[交通运输工程]分货种费率英汉例句双语例句It researches on the setting of uniform tax rate under single commodity or Double commodities and the different tax rate between two products.分别研究了单一产品时、两种产品时的统一税率的确定以及两种产品时的差别税率。single commodity rate更多例句专业释义交通运输工程分货种费率