帘栅极

SSS 2009-04-06

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a

发表于:2019-01-08 / 阅读(78) / 评论(0)

Scientific American(四)月

SSS 2011-09-09

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Common batteries are electrochemical cells. And they may get better thanks to living cells: the multicellular organism called brown algae. Lithium ion

发表于:2019-01-08 / 阅读(81) / 评论(0)

Scientific American(九)月

VOA标准英语2011--Study Supports Breast Cancer Screening Every Two Years

Study Supports Breast Cancer Screening Every Two Years A new study finds that women who have a mammogram every other year are less likely to get a suspicious result requiring additional testing as compared to women who have the breast cancer screenin

发表于:2019-01-14 / 阅读(48) / 评论(0)

VOA标准英语2011年(十月)

美国国家公共电台 NPR Lawmakers Weigh Pros And Cons Of Mandatory Screening For Postpartum Depression

NOEL KING, HOST: Lawmakers in California are about to start debating a bill that would make doctors screen pregnant women and new mothers for mental health problems. Many doctors do not like this idea. From member station KQED in San Francisco, April

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2018年NPR美国国家公共电台3月

Scottish bowel screening trial succeeds

BEIJING, Nov. 9 (Xinhuanet) -- Routine bowel screening can cut deaths from bowel cancer by 27 percent, a latest Scottish study finds. The result was presented at the National Cancer Research Institute's (NCRI) conference in Liverpool. Funded by the S

发表于:2019-01-19 / 阅读(45) / 评论(0)

英语新闻

2006年VOA标准英语-Study: Screening of Young Athletes Can Reduce R

By Melinda Smith Washington, DC 05 October 2006 watch Athletes Heart Risk One of the leading causes of death among young athletes on the playing field or court is a heart condition called Hypertrophic Cardiomyopathy. But the results of a 25-year stu

发表于:2019-02-03 / 阅读(120) / 评论(0)

2006年VOA标准英语（十月）

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