[医] 水中溶解氧

[ti:UNIT 4 Look into Science! Lesson 30: Keep the Candle Burning!] [0:00.733]UNIT 4 第四单元 [0:02.636]Look into Science! 走进科学! [0:05.638]Lesson 30: 第30课 [0:06.956]Keep the Candle Burning! 让蜡烛燃烧! [0:09.491]THINK ABOUT IT

发表于:2018-12-13 / 阅读(105) / 评论(0) 分类 河北教育初中英语(初中起点)八年级下册

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(73) / 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(49) / 评论(0) 分类 Scientific American(四)月

UNIT 4 [00:03.08]Lessons 25~32 [00:08.05]Look into Science! [00:11.89]Lesson 25: [00:16.64]Keep the Candle Burning!Science is so interesting! [00:23.72]I'm sure you'll like this experiment! [00:28.68]When you do this experiment,you will learn somethi

发表于:2019-01-09 / 阅读(229) / 评论(0) 分类 河北加拿大版初中英语

Mars 火星 Mars is a planet. 火星是行星。 It is next to the Earth. 它紧邻地球。 Its size is about one fourth of the Earth. 它约有四分之一个地球大。 Mars is not far from the Earth, but the environment is very different. 火星离

发表于:2019-01-10 / 阅读(36) / 评论(0) 分类 与美国小学生一起学英文第5册

Plankton More Important than Scientists Thought 浮游生物比科学家认为的重要的多 For years, most people thought of small organisms called plankton as food for whales and other large sea animals. But a four-year long study discovered that

发表于:2019-01-12 / 阅读(39) / 评论(0) 分类 2015年VOA慢速英语(六)月
学英语单词
actual record length
american college testing program (act)
amici compensator
amplitude of stress
Anabaseine
anal cone
antifreeze mixture
appeaseless
atafu (atafu i.)
back eccentric wheel
back slip
Bol'shoy Sayan, Khrebet
brillouin's theorem
budding time
Carpodacus mexicanus
center of motion
chain printing principle
Changhowon
Chenopodium giganteum
company-centred
compulsory dive
confluent kidney
controlled-exchange system
dendrolagus lumholtzi
disentrain
dorsiventrally
dry acid descaler
electress
environmental protectio agency (epa)
Epicureanism
euphylla
European-American
Even up the Score
exterior finish
fina
fixture
florameda
fountain-pen type exposuremeter
Fourdristairformer
fruits of the earth
Gadus macrocephalus
garten
go halves with
have a dekko
Hällekis
iopanoic acid
Just Say No
kempel
khazi
lab dyer
lateral magnification
microptic
nonmasochistic
nonpornographic
O display
over-night dough
ovoo
pivoted clamp
plank bed
postluded
potassium fluohafnate
proof coil
pulsed electron impaction source
quarteroons
queu(e)ing specification
reactor vessel
rear track
scotcil
self seal coupling
senkoes
sheep-branding fluid
silent zone of lung
sing songwriter
situatable
slinter
slumpflationary
Smoke proof
smush mittens
sports
staff allowance
starting ejector
steel figure
storage terminal
stream sanitation
syngas
T-handle pentagonal fixed socket wrench
taper per foot
Tetrafugan
thermal shock resistance
tool nipper
transection glacier
triple carbon-to-carbon linkage
ultrasonic pulse velocity
universal rolling
unmarkedness
update query
ventral constrictor
whindle
windward sides
Ymodem Ymodem
zogs