单词：high-pressure catalytic unit
单词：high-pressure catalytic unit 相关文章
Unit 4 Text A Pre-reading Activities 1. As you listen to the passage, fill in as much information as you can about Annette's plans. Friday evening: During the coming month: Next term: In the fall: Nex
21世纪大学英语读写教程
Unit 4 Text A Pre-reading Activities 1. As you listen to the passage, fill in as much information as you can about Annette's plans. Friday evening: During the coming month: Next term: In the fall: Nex
21世纪大学英语读写教程
Diesel fuel in the US and the fumes from diesel engines are about to get a whole lot cleaner. As of today, the Environmental Protection Agency is requiring much of the diesel in the country to have 97% less sulfur in it. It's the start of a project
2006年NPR美国国家公共电台
By Carol Pearson Washington 22 August 2007 High blood pressure, or hypertension, is a disease usually associated with adults, but children can get it too and can have serious health problems because of it. A new study is now calling for pediatricians
2007年VOA标准英语（八月）
By Melinda Smith Washington 12 September 2007 A recent study indicates that a disturbing number of American children with high blood pressure go undiagnosed. The study has prompted discussion worldwide about whether hypertension among children is jus
2007年VOA标准英语（九月）
Volkswagen has devised a new catalytic converter that could fix the majority of the cars in the US affected by the diesel emissions scandal, as details emerge of its attempts to satisfy regulators. 大众汽车(Volkswagen)设计出一种新的催化转
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