单词：three-phase half-wave double y rectifier
单词：three-phase half-wave double y rectifier 相关文章
A review of the guidelines for HIV treatment in poor countries finds priority should go to starting that treatment early. What we learned from a clinical standpoint, as well as a cost-effective standpoint, is that earlier anti-retroviral therapy impr
VOA标准英语2010年(十二)月
[00:04.91]54) Anti-sense Technology [00:10.55]Research scientists have reported success in using an experimental method [00:17.97]called anti-sense technology to treat people with cancer. [00:23.41]For years, researchers have tested anti-sense techno
美国英语听力80篇
Researchers are in the final steps of evaluating two new drugs to add to the existing treatment for hepatitis C. An estimated 170 million people worldwide have the liver infection known as hepatitis C. The standard, two-drug treatment is not effectiv
VOA标准英语2011年(四月)
By Lisa Schlein Washington 17 April 2008 A new drug that offers hope to millions of malaria sufferers is being launched in Latin America and Southeast Asia. The medicine, developed by a Brazilian pharmaceutical company and a non-profit drug developme
VOA常速英语2008年（四月）
今天我们要学的词是replacement。 Replacement, 意思是替代，替补。The coach chose Jimmy as the replacement for the injured quarterback, 教练选择Jimmy代替受伤的四分位。The basketball player just had a knee replacement surg
英语每日一词
今天我们要学的词是replacement。 Replacement, 意思是替代，替补。The coach chose Jimmy as the replacement for the injured quarterback, 教练选择Jimmy代替受伤的四分位。The basketball player just had a knee replacement surg
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