[化] 甲代烯丙基卤

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Landfills produce methanewhich can be valuable as an energy source. But scientists haven't known why landfills make so much methane. The solid waste in

发表于:2019-01-08 / 阅读(106) / 评论(0) 分类 Scientific American(四)月

AS IT IS 2015-09-20 Documentary Shows US, Mexico Fighting Drug Cartels 纪录片:墨西哥打击贩毒集团 A new movie follows two communities -- one in the United States and the other in Mexico -- as they try to stop drug cartels from harming thei

发表于:2019-01-12 / 阅读(56) / 评论(0) 分类 2015年VOA慢速英语(九)月

Synthetic Drug Problematic for US Authorities Augusta County, Virginia, is a rural county in the Blue Ridge Mountains, two and a half hours southwest of Washington. It has a big problem. Sheriff Randy Fisher says Augusta County was once known as the

发表于:2019-01-13 / 阅读(114) / 评论(0) 分类 VOA标准英语2012年(六月)

紧凑型荧光灯 Compact Fluorescent Lamp 金卤灯 metal halide/halogen lamp 溴钨灯 Bromine tungsten lamp 汞灯 mercury lamp 钠灯 Sodium lamp 卤钨灯 Halogen tungsten lamp 碘钨灯 iodine tungsten lamp 氖灯/霓虹灯 neon lamp 石英灯

发表于:2019-01-17 / 阅读(59) / 评论(0) 分类 实用英语

Raw anti-drug campaign awakens state Ted Landphair | Missoula, Montana 04 February 2010 Photo: Montana Meth Project Adults across Montana were frightened by what they were seeing. Some hardly recognized their meth-addled teenagers. Related Links Mont

发表于:2019-02-02 / 阅读(52) / 评论(0) 分类 VOA标准英语2010年(二月)

Voice 1 Hello. Im Ruby Jones. Voice 2 And Im Marina Santee. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. A small candle burns. It re

发表于:2019-02-21 / 阅读(64) / 评论(0) 分类 环球英语 Spotlight
学英语单词
adrenal hormone
agrellite
allergic inflamination
amenstrual ovulation
B side
ball nettles
benni
birckman
bitumen softening point gauge
boob bob
borophosphate glass
bourjaily
budget program
bull pine
Calanoidea
car-transfer
centrohelida
Chalcophas
combat camera
constant species
copper-nickel
Count the chickens before they are worm
cross-covariance
crustal collision
dicarbon
dieselise, Dieselising
diffuse ring
electrical thickness
equity partner
exocentrus keiichii
exponential curve of fit
exterior common area
fast coincidence circuit
ferulic acid
FIFA(fissions per initial fissionable atoms)
firn ice
flat-press wood chipboard
flying spot television microscope
genus cervuss
genus Polygonia
gigatonne
gioseffo
globe body
golden buttonss
H scan
hygrometrical
independence and competence
industrial district
International Conference on the Peaceful Uses of Atomic Energy
Jannatābād
let sb. go whistle
level of processing
logica level
long tonforce
lovemakings
Mamertines
matched loading of dangerous goods
middleperson
msb (metropolitan significant bit)
multiwavelength light emitters
mussaenda luteola del.
naughty parts
Necrobacterium
network effects
Niger, Mouths of the
ovulatory phase
oxalgine
PDLA
Peronosporales
Piscean
planetographic coordinates
plunger helix
population boom
posterior gastric plexus
posterolateral spinal sclerosis
preliminary screening
prime airlift
prosthetic lens
protubered
radar reflector
reiter
Rosso, Mte.
round haul net with bag
sacralised
Sandnes
second generation sporocyst
seter
shippers
smart-eating
Sorghum vulpare Pers.
sowo
spiral lead-in and spiral throw-out
stalacto stalagmite
standard program
subcentre
Tajam, Gunung
trichopodus
unemployment tax
VANGIDAER
variable money capital
Vejer de la Frontera
voluminous powder