氢氧切割器

Well, that's limelight. What exactly was it? Well it was the burning of calcium oxide in a very intense flame. And when did the job of a limelighter begin? Oh, famously, the first recorded instance in

发表于:2018-12-07 / 阅读(158) / 评论(0) 分类 圣诞特辑

Broadcast: February 14, 2003 By George Grow This is the VOA Special English Environment Report. President Bush has offered a plan to speed development of technology that uses hydrogen as fuel. His goa

发表于:2018-12-07 / 阅读(196) / 评论(0) 分类 VOA2003(上)-科技导航

Item eight. Vocabulary. fossil, molecule, hydrogen, carbon, sulfur. Petroleum has been important since ancient times. In Latin, the name means rock oil. Petroleum is a fossil fuel. The liquid comes from the remains of plants and animals that died mil

发表于:2018-12-27 / 阅读(131) / 评论(0) 分类 step by step 3000 第一册

Matthew / England speaker I hope not. I hope if they are driving cars they are run on hydrogen or perhaps something else, electricity perhaps, but I really hope we don't use gasoline anymore. Maiko / Japan speaker I do think in 100 years people will

发表于:2018-12-28 / 阅读(146) / 评论(0) 分类 一起闲话英语-English Chitchat

图片1 aerial n.天线 例句:The picture is much clearer with the new aerial. 装上新天线后画面清晰多了。 nitrogen n.氮 例句:Air consists chiefly of nitrogen. 空气主要由氮气组成。 oxygen n.氧 例句:Trees relea

发表于:2018-12-30 / 阅读(142) / 评论(0) 分类 漫画搞定六级词汇(文本+音频)

One main goal in the renewable energy field is to find an efficient, inexpensive way to split water into hydrogen and oxygen. The hydrogen could then be used as a fuel source for vehicles or fuel cells. Typically, an electric current breaks the water

发表于:2019-01-02 / 阅读(174) / 评论(0) 分类 60秒科学

Hyaluronic acid - the largest glycosaminoglycan known, it plays an important role of restricting the flow of water in tissues, particularly in synovial fluid where it acts as a lubricant.. Hydrogen bo

发表于:2019-01-03 / 阅读(132) / 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. Solar panels typically convert sunlight into electricity or heat. But photosynthetic vegetation converts sunlight into chemical energy. Now M.I.T.s Dan

发表于:2019-01-04 / 阅读(197) / 评论(0) 分类 Scientific American(八)月

One main goal in the renewable energy field is to find an efficient, inexpensive way to split water into hydrogen and oxygen. The hydrogen could then be used as a fuel source for vehicles or fuel cells. Typically, an electric current breaks the water

发表于:2019-01-08 / 阅读(200) / 评论(0) 分类 Scientific American(四)月

The Law Enforcement torch run for the 2007 Shanghai Special Olympics Summer Games has started across China. Beijing Mayor Wang Qishan was on hand to light up the flame at the Temple of Heaven. He then handed it to Law Enforcement torch bearers , ina

发表于:2019-01-11 / 阅读(162) / 评论(0) 分类 英语新闻视频

凭借在iTunes和MySpace的成功,来自美国加州的流行女歌手科尔比凯拉特(Colbie Caillat)的处女专辑《Coco》一经发行便得到了很多歌迷的关注。在美国上市第一周,这张《Coco》共售出5万1千张,在本周的Billboard 200专辑榜中跻身前五名. 在没有与唱片公司签订合约之前

发表于:2019-01-23 / 阅读(275) / 评论(0) 分类 音乐咖啡厅

BERLIN, April 25 (Xinhua) -- A study recently published in the journal Nature Chemical Biology opens up new avenues in biohydrogen research, the Technical University of Berlin (TU Berlin) said on Friday. Scientists at the TU Berlin succeeded in expla

发表于:2019-01-26 / 阅读(135) / 评论(0) 分类 英语新闻

AGRICULTURE REPORT - Compost: an Organic Way to Better Soil and Crops By Gary Garriott Broadcast: Tuesday, July 05, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Many farmers im

发表于:2019-01-30 / 阅读(246) / 评论(0) 分类 农业与发展

The U.S. space agency is moving ahead with preparations for Thursday's scheduled launch of the space shuttle(航天飞机) Discovery on its mission to the International Space Station. NASA said it was loading liquid oxygen and liquid hydrogen into th

发表于:2019-02-02 / 阅读(160) / 评论(0) 分类 英语新闻

German Car Manufacturer Audi Creates Fuel From Air And Water 奥迪用空气和水合成新燃料 Creating an alternative green or carbon neutral fuel to replace gasoline has been the holy grail for scientists for many years. However, while there has

发表于:2019-02-05 / 阅读(146) / 评论(0) 分类 阅读空间

LONDON, May 10 (Xinhua) -- The London Organising Committee of the Olympic and Paralympic Games (LOCOG) has confirmed that the first torchbearer for the Olympic torch relay will be three-times Olympic gold medallist Ben Ainslie. Ainslie will start the

发表于:2019-02-05 / 阅读(178) / 评论(0) 分类 英语新闻

LONDON, April 11 (Xinhua) -- The Olympic Torch has passed rigorous testing to ensure even the worst of Britain's weather will not be able to put it out, the Evening Standard newspaper said Wednesday. Two prototypes withstood 50mph winds, extreme temp

发表于:2019-02-07 / 阅读(166) / 评论(0) 分类 英语新闻

The Olympic torch has climbed the tallest mountain in Wales carried by one of Britain's best-loved mountaineers. 奥运火炬已经到达了威尔士最高山,是由英国最受欢迎的登山运动员之一克里斯伯宁顿爵士传递的。 Sir

发表于:2019-02-08 / 阅读(228) / 评论(0) 分类 英语新闻视频

巧妙拒绝别人 Establish boundaries and honor them for all to see 设定让所有人都知晓的界限,并坚决执行 Let your constituents know your priorities and limits. Don't continually break your own rules about when you are available or

发表于:2019-02-16 / 阅读(124) / 评论(0) 分类 英语听力广播—Listening

Hydrogen and Industries Hydrogen,the lightest and simplest of the elements, has several properties that make it valuable for many industries. It releases more heat per unit of weight than any other fuel.In rocket engines, tons of hydrogen and oxygen

发表于:2019-02-17 / 阅读(129) / 评论(0) 分类 双语有声阅读
学英语单词
2-Thiazolamine
aggregation model
Androsace bungeana
arbitrageuring
Arcevia
Bacon,Roger
Bangkoker
benediction of the blessed sacrament
bicycle system
binchy
bolt race-way
brake gear handle
bromocrotonic acid
bubulcitate
cache-sex
characteristic dimension
chloriodic acid
chylle
co-operativeness
collecting comb
concentration of enterprises
condemningly
congii
constructionsurvey for shaft drilling
copter mount
counter quenching circuit
curves in the same sense
Dahna
Damasławek
dangerous cargo insurance
datastrom assembly system (das)
dipso-
dual channel controller
eau be nite
edra
embryo abnormality
endomycopsis hordel
Erskine May
export and import price index
external device response
federal aviation regulation
finny tribes
five point jack
flex one's muscles
formal agreement
fraction gear
frazolon
gas-turbine engine lubricant
gd-vii virus
glueynesses
governor magnet valve
grit size
hackborn
have no school
hay-making chute
hemopoiesis-
hot-air dryer
kippered fish
lake country
London Corresponding Society
macroprosopus
Methanohalophilus
minimum concentration
momentousnesses
motor analysor
myxedemas
navarones
operation control unit
oraconaris
Pakashkan L.
Panabutan B.
phaeographina montagnei
PHWS
potential emission
primer housing
progressive set
quantum phenomenon
querculane
radial striae
Remove Links
retweaking
single thread processing
sludge head tank
smart dot-matrix printer
sodium 6-chloro-5-nitrotoluene-3-sulfonate
Solanum lysimachioides
special helical spring
spot passes
stand at
stereo broadcasting
strike-outs
supplies management
surgical correction of microstomia
synchronous excitation spectroscopy
Syzygium howii
table of combination
ungranted
uninsulation
white glaze with underglaze black colours
wikiquette
worm cam interval mechanism
Zimmerman I.