单词：medicinal barium sulfate
单词：medicinal barium sulfate 相关文章
Protamine sulfate is a drug that reverses the anticoagulant effects of liver compounds such as heparin. Protamine is extracted from the sperm of salmon and other species of fish, and then made into a protamine sulfate injection which is a necessary d
世界各地新闻集锦
ENVIRONMENT REPORT — April 12, 2002: Medicinal Plant Conservation By Mario Ritter This is the VOA Special English ENVIRONMENT REPORT. Throughout history, people around the world have used traditiona
健康与环境
By Julie Carpenter Doctors in some parts of the United States have prescribed marijuana to people suffering from a variety of medical conditions; and though it is used for medicinal purposes in many p
VOA2004（下）--时事新闻
We keep pumping carbon dioxide into the atmosphere and the earth keeps warming. Climate scientists have predicted that the consequences of unchecked warming could result in everything from catastrophic flooding to larger and more deadly hurricanes. S
英语时差8，16
First off, I'll mention that at the bottom of the sea there exist veins of zinc, iron, silver, and gold whose mining would quite certainly be feasible. 首先，我对您说，海底有锌、铁、银、金等矿藏，开发并不是不可能的事。
《海底两万里》中英双语有声读物