[化] 层色谱法

layer chromatography的用法和样例:

例句

  1. Meanwhile, a thin-layer chromatography for detecting those prohibited azo dyes in textiles is presented.同时介绍了用薄层色谱分析法检测纺织品中禁用偶氮染料的方法。

[00:00.00]在线英语听力室( www.tingroom.com )友情制作 [00:05.80]1998 Passage3 [00:08.62]Science has long had an uneasy relationship [00:11.94]with other aspects of culture. [00:14.56]Think of Gallileo's 17th-century trial for his rebelling belief [00

发表于:2018-12-01 / 阅读(471) / 评论(0) 分类 历年考研英语阅读理解

CHAPTER ONE [00:44.25]READING [00:45.74]Page 2 and 3 [00:48.43]THE YOUNG GREEN CONSUMER GUIDE [00:51.51]Review by Tony Ma [00:54.62]This book says that our world is in danger [00:59.32]It is vital that we do something to save the earth [01:04.21]Firs

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I first heard about the ozone layer about twenty years ago. I was still in school. I thought it was interesting, but I didnt take it seriously. It was a bit like science fiction, I mean, how could there be a giant hole in the atmosphere? Over the yea

发表于:2018-12-04 / 阅读(206) / 评论(0) 分类 听一分钟英文-O

There is a special day to recognize the importance of the ozone layer. In 1995, the United Nations General Assembly decided September 16th is the International Day for the Preservation of the Ozone Layer. This is the date on which countries signed th

发表于:2018-12-29 / 阅读(256) / 评论(0) 分类 英语课程学习计划和讲义

Another good candidate would be a government-run plant at Badarpur, less than 50km from the middle of Delhi. 另一个较好的选择便是位于巴达普(距德里市中心不到50千米)的官办工厂。 According to the Centre for Science and

发表于:2018-12-29 / 阅读(153) / 评论(0) 分类 经济学人科技系列

P-MAC packet media access controller PAD packet assembler-disassembler PCB printed circuit board PDS premises distribution system Personal Communications Personal communications provides at least one

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生活有希望,才快乐。 在好莱坞人人都梦想得到奥斯卡奖,连乞丐都满怀着希望,乞丐要饭时,旁边立了块牌子,上面写着: Help keep my Oscar Hopes Alive. 帮帮忙,让我保持我的奥斯卡希望。 对生

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美语中,一些感叹词的意义跟字典上的解释不尽相同,要在日常生活中才能体会到。让我们看看以下几个例子: Oh的字典意义是嗬;哦;哎呀,表示惊讶、的恐惧等。但将这个词连起来用,却

发表于:2019-01-09 / 阅读(192) / 评论(0) 分类 实用英语

Air pollution 空气污染 A: I've heard of ground-level ozone but can you explain what it is exactly? A:我听说近地面臭氧,但是你能确切解释一下是什么吗? B:Yes, it's one of the main air pollutants. Factories don't emit it dire

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Science Fiction-style replications, as seen in TV shows like Star Trek, might be a step nearer to becoming reality. Digital technology means it's now possible to make 3D objects from downloaded designs. Our reporter Li Dong has the details. These fun

发表于:2019-01-19 / 阅读(171) / 评论(0) 分类 世界各地新闻集锦

A: May I exchange this DVD player? B: Certainly. Do you have your receipt? A: Here you are. B: Now, why do you want to exchange it? A: It won't play a DVD. B: I'm sorry. I'll get you a new player. A: At first, I thought it was me. B: Okay, here's a n

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A: I'd like to exchange this DVD player. B: Of course. Do you have your receipt? A: Here it is. B: Now, could you tell me why you want a different one? A: It refuses to play my DVDs. B: That's strange. Let me get you a new one. A: All my friends trie

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I first heard about the ozone layer about twenty years ago. I was still in school. I thought it was interesting, but I didnt take it seriously. It was a bit like science fiction, I mean, how could there be a giant hole in the atmosphere? Over the yea

发表于:2019-01-21 / 阅读(201) / 评论(0) 分类 纯正英语一分钟

HARI SREENIVASAN, PBS NEWSHOUR WEEKEND ANCHOR: Scientists studying climate change in Antarctica reported this week that the hole in the protected ozone layer of the earth's atmosphere has shrunk. The discovery of the hole in the mid-1980s led to a wo

发表于:2019-01-27 / 阅读(158) / 评论(0) 分类 PBS访谈环境系列

BEIJING, Jan. 29 (Xinhua) -- Thirty percent of official cars in Beijing should not be used when there is extremely bad pollution, traffic authorities confirmed Tuesday. The order was implemented on Monday evening to help combat the fourth round of he

发表于:2019-02-04 / 阅读(278) / 评论(0) 分类 英语新闻

口语:周末了 我们去滑雪吧 1. Layer up 一层一层把自己裹起来 Although it can be tempting to purchase the biggest, thickest items of clothing for a ski holiday, the best way to maintain heat is by layering lots of thin layers. When y

发表于:2019-02-09 / 阅读(153) / 评论(0) 分类 英语口语

M: Excuse me! W: May I help you? M: Yes, I'd like to send this book to France. W: Let me weight it first. That'll be 14 dollars. M: Can it go in an envelop? W: Of course, it's 4 dollars now. M: Do I need stamps? W: No, you don't. We use computers now

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你不来 我不敢老去 Actually, I'm old That I've to let the small tree in front of the door for me shed the leaves off I'm too old as to shell off a layer of earth And another layer of earth once more Seeing these layers of earth I know that goi

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此题感谢lgc,是6月28日雅思写作大题目。关于能源危机的解决。此文思路清晰,结构除了建议部分稍显单薄,还是十分合理的,最关键的是本文的词汇功力,可以看出作者应该按照我上课的要

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学英语单词
across the board tax cut
against weather
animatism
antels
anti-state
Artocarpus integrifolia L
axing
believable
benchmark entry point
beproses
bialaphos
bonorum separatio
butyl 2-furylmethyl ether
capitas
concrete slab pavement
cribriform hymen
crude method
dehydrocortisone
desmarestia aculeata (l.)lamx
difethialone
different treatment of same disease
dissolution of adoption
doblin
E isomer
energy-losses
Epis.
eutectoid alpha ferrite
excision map
fidgeon
finishing the heat
fissura ani
game-plays
gasoline precipitation test
geologising
grid letters
handcarry
hard and fast rules
hard tin alloy
heterokaryocyte
inside bond
insulator strength
intended savings
iris setting
jack-o'-lantern
jimmies
joint will
king-cups
load point
lockhorns
mark sense
marketplace of ideas
marly slate
Merse, Fiume
metapodosoma
micropipet
more-advanced
morreale
mudsleds
municipallaw
need-to-share
negatan
network and trunk control
non-flaming paper
nuisance parameter
obrayde
percentage subsidence
pseudoracist
puchero
rapprochements
rate, discharge
red alerts
rumala
salary increase
San Carlos Centro
sanguineous cyst
security restore
semi-enclosed type machine
shunpiker
Sibbaldia purpurea
sigma recording methanometer
sinfulness
split-feed
steel gate
strategy and tactics
superego-development
survey craft
Sympetalae
take it in the neck
therapeutist
Titanoclinohumite
touch-tone dialing
tpia
track lifting machine
tx (transmitter)
under saturated pool
unipresence
variegated sandstone
Villeneuve-de-Marsan
wagonage
wandering albatross
Warholesque
wrestlemania