premium grades

premium grades 基本解释

网络  优等品

化学

重点词汇

• premiumn. 额外补贴, 奖金, 奖赏, 保险费 [医] 保险费
• gradesn.(产品、材料的)等级，品级;(官衔的)级别;职别;成绩等级;评分等级v.(按能力、质量、大小等将…)分级，分等，分类;给…评分;给…分数grade的第三人称单数和复数

premium grades 双语例句

1. 1、 An essential difference between "premium" and "regular" grades of kerosine is that the former has a higher smoke-point.
   高档与中档煤油的根本差别在于前者比后者的发烟点高。