[化] 乙苯; 苯乙烷

ethyl benzene的用法和样例:

例句

  1. The effect of reaction parameters on the nitro benzene conversion and product composition has been studied.考察了反应参数对硝基苯转化率及产物组成的影响。
  2. The main distyryl benzene fluorescent brighteners and the synthetic procedures for the representative products are reviewed.摘要综述了二苯乙烯基苯类荧光增白剂的主要品种及一些代表品种的合成工艺。

AS IT IS 2014-05-25 Scientists Search for New Ways to Stop Mosquitoes 科学家们寻找新的方法来对付蚊子 The sound of a mosquito can mean trouble in many parts of the world. The bite of a mosquito can be deadly. Today, we will hear about s

发表于:2018-12-08 / 阅读(155) / 评论(0) 分类 2014年VOA慢速英语(五)月

美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 630,000 people died of malaria-related

发表于:2018-12-19 / 阅读(110) / 评论(0) 分类 VOA双语新闻 2014年1月

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(139) / 评论(0) 分类 Scientific American(八)月

Promising Mosquito Repellent Announced美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 6

发表于:2019-01-14 / 阅读(106) / 评论(0) 分类 VOA标准英语2014年(一月)

One Police stops on police vehicle outside one Victoria's Bar. After the preparation, as necessary arrests?, this liquor drive slightly mixes. Suddenly he sees to have a young people shakely goes out from bar, spend the many figures only then finds

发表于:2019-01-17 / 阅读(86) / 评论(0) 分类 白领英语晨读

Indoor air pollution is a common threat to human health, the new study looked at five common house plants and found that when it comes to removing harmful chemicals from the air, those five plants are better than others. 室内空气污染对人类健康

发表于:2019-02-07 / 阅读(143) / 评论(0) 分类 阅读空间

On its website, a history of the company makes no mention of leador indeed of Thomas Midgleybut simply refers to the original product as containing a certain combination of chemicals. 在它的网站上,公司的历史没有提及铅──也没有提

发表于:2019-02-17 / 阅读(112) / 评论(0) 分类 万物简史

By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo

发表于:2019-02-17 / 阅读(127) / 评论(0) 分类 万物简史

Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions

发表于:2019-02-17 / 阅读(122) / 评论(0) 分类 万物简史

本期内容: A humble houseplant with a dash of rabbit DNA could help lower our exposure to indoor air pollution, new research suggests. Scientists have revealed that by inserting a rabbit gene into devils ivy the plant is able to clean the surrou

发表于:2019-02-20 / 阅读(110) / 评论(0) 分类 夏说英语新闻晨读

If you were going to a restaurant and wanted a healthier option, 如果你去饭店,你想吃得健康一点, which would you choose, grilled or fried chicken? 你会选择哪种食品呢,烤鸡还是炸鸡? Now most people would answer grill

发表于:2019-02-21 / 阅读(140) / 评论(0) 分类 TED演讲教育篇
学英语单词
5th
accelerating cavity
agrotown
alternative-fuel burning
answer the telephone
Antifederal party
art course
atarba (atarbodes) issikiana
atrophie blanche en plaque
Bakin Turu
ball stone
Bermuda shorts
blank form
bone metabolism during weightlessness
bucket bolt
bull earing
Chakhmāq Bolāgh-e Bālā
clientary
cohort
composition surface
concede a goal
core of personality
crammers
crea-tures
crest coronet
cycle lanes
departure from nucleate boiling ratio
detection unit
earth tap
electronic data printer
eretmochelys
ethylic
euploea eunice botelianus
extinction angle
fast-neutron cycle
fresnoes
gambari
geocentric orbit
gettin' ass
ghost line
glucosepane
Guinda
heame
hebuterne
heder
hermaphroditical contact
heterogony
highest thoracic artery
historical cost statement
Hoar Edge Grits
inappertinent
intraorganellar
inversion transition
kind
list parameter
long-term frequency stability
make a reach for sb
marmite can
mastogloia manokwariensis
medium density polyethylene
molecular property
muricola orientalis ver. schuffneri
mycophagies
nasdse
noise diode
non-conventional type
octavers
off-gas vapour trap
ordinary gear train
Orthacea
overstimulations
pas de calaiss
pedroso
pheromone field test,pheromone field trial
polar crystal
probe assembly
prototheorids
psychology of sound
Pulsatilla dahurica Spreng.
rational integral expression
reussin
reynold's formula
right trapezoid
rigorous error limits
Riplinger
rod coil
saltcakes
seismic amplitude
seocnd intermediate host
simplified practice
singal reservoir
structural surface
sympatho-
synchro-indicator
the claim
trigger pulse
turbine cycle flow
universal cameramicroscope
unpreventive
variation per minute
water-dispersible paint
y-punch