滤毒器

Medical Microbiology医学微生物学 adenovirus 腺病毒 adsorption 吸附 aerobe 需氧菌 aflatoxin 黄曲霉毒素 airborne transmission 空气传播 amantadine 金刚烷胺 anaerobe 厌氧菌 anthrax 炭疽 antigenic drift 抗原漂移,抗原转

发表于:2018-11-29 / 阅读(150) / 评论(0) 分类 医务英语

[00:00.00][s],[ ][ ] [00:38.61]sea/sheet/chicken [00:42.66]Exercise One: Word Conparison [00:47.62]Listen to the following words from your tape and repeat. [00:52.98]sip ship sane shane watched washed [01:01.23]lass lash least leashed chin [01:09.09]

发表于:2018-12-03 / 阅读(164) / 评论(0) 分类 掌握英语发音

But the HEPA filter for Olivers Vibe got dirty very quickly. And, it was not cleanableit was simply replaceable. When it turned filthy brown, Oliver went back to Target to buy a new filter. Oddly, Target sold the F15 belt for the Vibe, but not the fi

发表于:2018-12-11 / 阅读(99) / 评论(0) 分类 365个英语简短小故事

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As long as there have been mice, people have sought a better mousetrap. And since we figured out that bacteria can make us sick, weve searched for better

发表于:2018-12-24 / 阅读(93) / 评论(0) 分类 Scientific American(十)月

This podcast is brought to you by the American Chemical Society. The global challenges chemistry solutions podcast from ACS discusses how chemistry researchers critical in solving some of the world's most daunting problems, concerning energy, food an

发表于:2018-12-24 / 阅读(68) / 评论(0) 分类 Scientific American(十一)月

Bad Things Come in Small Packages 拆信小心! While most armies in the world shun their use, and military authorities exclude them from warfare, the technology to produce biological and chemical w

发表于:2018-12-31 / 阅读(48) / 评论(0) 分类 有声英文阅读

From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a

发表于:2019-01-03 / 阅读(97) / 评论(0) 分类 2018年VOA慢速英语(一)月

D Dahurian Rhododendron Leaf P.E 满山红提取物 Daidzein 大豆甙元 Daidzin 大豆甙 Dandelion P.E 蒲公英提取物 Daphnetin 瑞香素 Daphnin 瑞香甙 Daucosterol 胡萝卜甙 Dauricine 蝙蝠

发表于:2019-01-03 / 阅读(102) / 评论(0) 分类 医务英语

This is Scientific Americans 60-Second Science, I am Cynthia Graber .This will just take a minute. How can we improve engines, inhalers and fire extinguishers? Maybe by copying a beetle. The bombardier beetle's name might scare off predators if they

发表于:2019-01-08 / 阅读(97) / 评论(0) 分类 Scientific American(四)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. For years, scientists and physicians have been up in arms about the rise in antibiotic resistance. Seems that many bacteria, devious buggers that they ar

发表于:2019-01-08 / 阅读(77) / 评论(0) 分类 Scientific American(一)月

At one time or other, someone has probably told you its written all over your face. Thats because your emotions can influence your expressions. Well, a study in the journal Psychological Science suggests that the reverse is also true: that the look o

发表于:2019-01-08 / 阅读(75) / 评论(0) 分类 Scientific American(二)月

The tailings ponds are the largest toxic impoundments on the planet. 那些残渣池是世上最大的毒性蓄水池 Oil sands-r rather I should say tar sands-oil sands is a P.R.-created term, 油砂-或者我该称它为沥青砂-油砂是公关

发表于:2019-01-18 / 阅读(82) / 评论(0) 分类 TED演讲商业篇

Science and Technolgy 科技 Arthritis and botulinum toxin 关节炎与肉毒杆菌毒素 Something to celebrate 值得庆贺 Botulinum toxin may help relieve chronic pain 肉毒杆菌毒素也许能够帮助缓解慢性疾病的痛苦 ARTHRITIS is t

发表于:2019-01-26 / 阅读(63) / 评论(0) 分类 经济学人科技系列

Scheele's one notable shortcoming was a curious insistence on tasting a little of everything he worked with, including such notoriously disagreeable substances as mercury, prussic acid (another of his discoveries), and hydrocyanic acida compound so f

发表于:2019-01-29 / 阅读(65) / 评论(0) 分类 万物简史

If your hair is uber thick, curly, orfrizzy, or you're just not that into your texture, you might have consideredgetting your hair chemically straightened. But the pricey salon services haverecently come under fire for causing some super-scary side e

发表于:2019-02-01 / 阅读(52) / 评论(0) 分类 趣味英语

By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica

发表于:2019-02-03 / 阅读(136) / 评论(0) 分类 2007年VOA标准英语(五月)

HARBIN, March 2 (Xinhua) -- A therapeutic(治疗的) apparatus to treat Parkinson's disease has been developed in northeast China's Heilongjiang Province, according to the provincial science and technology department. It is a worldwide breakthrough i

发表于:2019-02-06 / 阅读(97) / 评论(0) 分类 英语新闻

BEIJING, July 23 (Xinhua) -- A Chinese dairy company has been ordered to suspend production after its infant formula products were found to contain the carcinogen aflatoxin, the nation's quality watchdog said Monday. Excessive amounts of aflatoxin we

发表于:2019-02-11 / 阅读(65) / 评论(0) 分类 英语新闻

1.An army scientist committed suicide before federal prosecutors could charge him with mailing anthrax-laced letters after the 9/11 attacks. Authorities say that the letters may have been part of a warped plan by Bruce Ivins to test a vaccine for th

发表于:2019-02-11 / 阅读(147) / 评论(0) 分类 美联社新闻一分钟2008年(八)月

Science and technology 科学技术 Arthritis and botulinum toxin 关节炎与肉毒杆菌毒素 Something to celebrate 值得庆贺 Botulinum toxin may help relieve chronic pain 肉毒杆菌毒素也许能够帮助缓解慢性疾病的痛苦 An infl

发表于:2019-02-16 / 阅读(112) / 评论(0) 分类 经济学人科技系列
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