[机] 反-丁烯二酸

boletic acid的用法和样例:

例句

  1. In this paper, the method of the synthesis of fumaric acid modified rosin was studied.富马松香由富马酸对松香经过加成改性而成。
  2. By using concentrated chlorhydric acid as catalyst,one-step reaction takes place between maleic anhydride and methanol and obtains dimethyl fumarate.马来酸酐与甲醇在浓盐酸催化作用下,经一步反应生成富马酸二甲酯。

With The Rise Of Legal Weed, Drug Education Moves From 'Don't' to 'Delay' LULU GARCIA-NAVARRO, HOST: California entered the brave, new world of marijuana legalization in 2018. And it's impossible to ignore. There are new dispensaries opening, even bi

发表于:2019-01-17 / 阅读(61) / 评论(0) 分类 2018年NPR美国国家公共电台6月

By Lisa Bryant Paris 01 February 2008 The European Union has announced it would delay a peacekeeping mission to Chad because of a new rebel offensive against N'Djamena's government. Meanwhile, Lisa Bryant reports from Paris the French government is d

发表于:2019-02-03 / 阅读(91) / 评论(0) 分类 VOA常速英语2008年(二月)

By Al Pessin Prague 23 October 2007 U.S. Defense Secretary Robert Gates says the United States might be willing to postpone activation of missile-defense sites planned for Poland and the Czech Republic until there is proof Iran has missiles that coul

发表于:2019-02-03 / 阅读(154) / 评论(0) 分类 2007年VOA常速英语(十月)

Nasa is entering the final stages of preparation for its last ever shuttle mission, but it is keeping a very careful eye on the Florida sky. The weather over the Space Coast was atrocious on Thursday, with torrential rain falling on the Atlantis orbi

发表于:2019-02-03 / 阅读(70) / 评论(0) 分类 英语新闻

WASHINGTON, Jan. 17 (Xinhua) -- U.S. President Barack Obama has insisted on his stance that Congress should increase the country's debt ceiling without delay, White House spokesman Jay Carney said Thursday. The President has made clear he's not going

发表于:2019-02-07 / 阅读(72) / 评论(0) 分类 英语新闻

Ethiopia has agreed to a brief delay in its troop pullout from Somalia to allow the international community time to organize a replacement force. VOA's Peter Heinlein in Addis Ababa reports the African Union is issuing an urgent appeal for manpower

发表于:2019-02-12 / 阅读(66) / 评论(0) 分类 VOA标准英语2008年(十二月)
学英语单词
a special providence
acrobatics and tumblings
acutifolia
air driven
alusiron
arborviruss
arithmetic circuit
baby-neck clam
Bainville
Banyuls-sur-Mer
Barabash-Levada
benign paroxysmal peritonitis
Bletilla striata
boy's play
Broadband over Power Line
bureau viritas
cabbaged
cannabina
capitulum dichasium
caudad
celadon ewer with single handle
coal fired locomotive
collateral bundle
collegate
content creation
core recovery
core support spring
corrosionresisting
crystallisability
cyclogiro
demountable coupling
dichocarpum sutchuense (franch) w.t. wang et hsiao
direction course
Djibouti City
dustiest
ecosystem-wide
endothermic change
energy of sea current
exanthropic
family Rafflesiaceae
fetches
find time to
finger-ends
five colour theorem
fixins
flowcells
fouling organism
full scale measurement
helix impedance
hibakushas
host network administration facility
hydraulic scheme
integrated management
job-placed
knavely
krist
mantooth
meningococcal arthritis
microprocessor host loader
Mongolian barbecues
netconnection
nondeviated
NSC-9166
numerical score
nutty Irishmen
origin of target noise
para-propionylphenol
pedestal binder
Pennisetum qianningense
permease
philologizes
poling
projectoscope
reading microscope
resistance to rail-creepage
reversal of the arm race
self-congruent
shang ti
shop automation
slowplays
soft access point
softie
Sorbus rehderiana
special through rate
speech waveform digital representation
speed measuring method
stand on ... head
stundum
syllabic nasal
Test, R.
thaumatropical
top and bottom
top lift frame
toppieces
track equipment
trans-compound
unidentified-male
vegetable fibrin
vibration exposure
wanderstar
word processings
xenologous graft