酸性过锰酸钾法

This is Scientific American's 60 Second Science. I'm Steve Mirsky, got a minute? The Meridiana Planum region of Mars once had water that was really soft and highly acidic, conditions in incredibly hostile to any life forms that we know about. So any

发表于:2018-12-24 / 阅读(170) / 评论(0) 分类 Scientific American(二)月

It's bad enough that mosquitoes suck our blood, and sometimes pass on disease. But there's more. They can actually give you a disease and pee on you at the same time. Adding insult to injury if you will. Jerod Denton, a pharmacologist at Vanderbilt U

发表于:2018-12-24 / 阅读(135) / 评论(0) 分类 2016年Scientific American(十二)月

Fruit Vendor: Wait! Don't go just yet. These bananas are pretty cheap--only 35NT for this bunch. Robert: Now that's more like it! Bananas have lots of potassium, too! Fruit Vendor: They're also good for your digestion! Would you like some kiwis, too?

发表于:2018-12-25 / 阅读(117) / 评论(0) 分类 Eztalk美语会话

Fish raised in the more acidic seawater that would result from higher carbon dioxide levels forget to flee predators. More carbon dioxide emissions lead to more CO2 dissolving in the oceans, which turns the water acidic. Those sour seas slow the grow

发表于:2019-01-02 / 阅读(114) / 评论(0) 分类 60秒科学

Darwinian medicine - an approach to the treatment of infective diseases which takes account of the co-evolution between the host and its parasite. Deciduous - from the Latin

发表于:2019-01-03 / 阅读(124) / 评论(0) 分类 医务英语

青霉素类 苯唑西林钠 Oxacillin Sodium 新青霉素Ⅱ,苯唑青霉素钠,苯甲异噁唑青霉素 奈夫西林 Nafcillin 新青霉素Ⅲ,乙氧萘青霉素 匹美西林 Pivmecillinam 氮卓

发表于:2019-01-03 / 阅读(160) / 评论(0) 分类 医务英语

More carbon dioxide emissions lead to more CO2 dissolving in the oceans, which turns the water acidic. Those sour seas slow the growth of corals. And it turns out acidic seawater also makes clownfish and damselfish suicidally bold and reckless, accor

发表于:2019-01-08 / 阅读(135) / 评论(0) 分类 Scientific American(七)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Landfills produce methanewhich can be valuable as an energy source. But scientists haven't known why landfills make so much methane. The solid waste in

发表于:2019-01-08 / 阅读(204) / 评论(0) 分类 Scientific American(四)月

This is Scientific American 60 second Science, I am Sophie Bushwick, got a minute~ Theyre called hydogels: Jell-O-like materials made of networks of long-chain molecules in water. And theyre as flexible as living tissue. But hydrogels could not recov

发表于:2019-01-08 / 阅读(186) / 评论(0) 分类 Scientific American(三)月

Dietary Changes Help Lower Blood Pressure Sunday, April 7, is World Health Day, and this years theme is high blood pressure, also known as hypertension. The World Health Organization has recommended reducing salt or sodium intake to lower the risk of

发表于:2019-01-14 / 阅读(166) / 评论(0) 分类 VOA标准英语2013年(四月)

Tsinghua University released the initial investigation results provided by Haidian Public Security Bureau a few days ago, which revealed that a hydrogen cylinder exploded accidentally, and the whole lab then caught fire. Meng Xiangjian died as the re

发表于:2019-01-19 / 阅读(195) / 评论(0) 分类 2015CRI中国国际广播电台

如果你爱喝葡萄酒或经常遇到要喝葡萄酒的场合,学几句高大上的品酒英语尤其重要。 品葡萄酒本节课的重点词汇: 1) wine tasting 葡萄酒品酒会2) tasting flight 品酒序列3) Cabernet Sauvignon 赤霞珠4)

发表于:2019-01-22 / 阅读(146) / 评论(0) 分类 美国文化脱口秀

This week on Why Tell Me Why, we are finding out why the oceans are so salty. So the oceans are salty because the oceans have been around, lets say, for over five hundred million years. And over the course of time what we found out is that weve alway

发表于:2019-01-22 / 阅读(147) / 评论(0) 分类 自然百科2009年

Amygdala's Acidic Aspiration Answer A study in the journal Cell shows that the buildup of carbon dioxide when we stop breathing causes a pH change that signals proteins in the brain to force us to inhale. Karen Hopkin reports. Maybe its happened to y

发表于:2019-01-30 / 阅读(238) / 评论(0) 分类 60秒科学

今天分享的是柠檬水的妙用。 重点词汇 immune system 免疫系统; potassium n.化钾; freshen vt.使新鲜; 使清爽,使有精神,把(自己)盥洗一番; 1. Gives your immune system a boost. 2. Excellent source of potassium.

发表于:2019-02-02 / 阅读(159) / 评论(0) 分类 卡卡课堂早餐英语

Sore heads the morning after the night before could become a thing of the past thanks to a 'revolutionary' new drink - designed to prevent HANGOVERS. 一种专为防止宿醉设计的革命性新饮品有望令宿醉第二天早上醒来后的头痛成

发表于:2019-02-05 / 阅读(190) / 评论(0) 分类 阅读空间

Eating three bananas cuts your risk of a stroke, scientists say. A banana for breakfast, one for lunch and one in the evening would provide enough potassium to reduce the chances of suffering a blood clot on the brain by around 21 per cent. 科学家称

发表于:2019-02-06 / 阅读(190) / 评论(0) 分类 阅读空间

生活英语:健康饮食(双语)

发表于:2019-02-07 / 阅读(142) / 评论(0) 分类 阅读空间

Although our cell was large, we obviously had used up most of the oxygen it contained. 虽然牢房还算宽大,但很明白,我们已经消耗掉了里面大部分氧气。 In essence, over an hour's time a single human being consumes all the ox

发表于:2019-02-17 / 阅读(141) / 评论(0) 分类 《海底两万里》中英双语有声读物

Don comes up with another entrepreneurial venture, but Yael straightens him out just in time. [Thunder] Y: What are you doing outside, Don? It's about to rain. D: I'm setting up bottles. Y: I can see that. But why? D: For my new business venture: bot

发表于:2019-03-06 / 阅读(218) / 评论(0) 分类 英语时差8,16
学英语单词
accomodation bulkhead
accounted for
advancive
annuity accumulation unit
barra de cazones
be closed and self-fettered
beetle faller
benmoxin
bespurted
betablockers
brittle coating method
Burkes Pass
cassia nodosa l.
Chanac
chaufur
Chinese olives
chyliza fumipennis
circuitous pattern
coenostroma
coking drum
contrix-28
corrupting
country of consignment
Cromer
crooned
crwme
CTLSO
danjon
debugs
ditch-digger
duquemin
eaves moulding
external shield
followdays
fusion fuel
General Event Notification Architecture
German black
hemi-melus
high - pressure physics
hyperaphia
Illawarra shorthorn
in (intelligent network)
inchmen
inside jamb block
kulina
ladder tape
Lapotkovo
line coding
Malayan camphor
management class
mancorn
mascalls
meconoisine
Melandrium
mellowest
metanalyses
modulation reactor
mufflehead
multi-mixer
mushy stage
niggeresses
non symmetrical section
nonmyeloid
obstetrical
operating maintenance panel
opiocortin
penties
per bottom clause
preribosomal RNA
production-sharing
propeller-headed
pseudotechnical
punudos
quasi-collective goods
radiospectroscopy
rawnke
reduce supplies
reposting
semantic function
sieve-like poikiloblastic
single-stage suspension
smoke detection piping
special quality brick
speciation(simpson 1944)
specific energy of sense
spinasterols
split run
stationary ensemble
tainton
technical lettering
thickness of covering
track address register
two-stage compression freezing
ultraviolet photograph
underdamp
unlated
vapour-phase system
vertical pulling method
Villanueva del Rey
vorthy
william felton russells
would sooner