2-乙基-3-甲基吡嗪

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a

发表于:2018-12-24 / 阅读(65) / 评论(0) 分类 Scientific American(六)月

Egyptian archaeologists have discovered the bottom part of an unknown pyramid in the Sakkara area about 18 miles south of Cairo. NationalGeographic explorer-in-residence Dr. Zahi Hawass, the Secretary General of the Egyptian Supreme Council for Anti

发表于:2018-12-30 / 阅读(64) / 评论(0) 分类 国家地理2008年

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(90) / 评论(0) 分类 农业与发展

Egyptian archaeologists have discovered the bottom part of an unknown pyramid in the Sakkara area about 18 miles south of Cairo. National Geographic explorer-in-residence Dr. Zahi Hawass, the Secretary General of the Egyptian Supreme Council for Anti

发表于:2019-01-22 / 阅读(68) / 评论(0) 分类 自然百科2008年

Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长

发表于:2019-01-26 / 阅读(59) / 评论(0) 分类 经济学人科技系列

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(68) / 评论(0) 分类 TED演讲教育篇
学英语单词
a goober
acute oral toxicity
ajut
Amhara Plat.
ansi blocking data
appealer
assiniboins
autocode list processing
bar-tenders
basic reader
Bergkamen
bill undue
buckhout
burgi
burner assembly
byre-man
ceramic matrix composite (cmc)
control chamber
crawke
cysticerci
darussalams
dune fixation afforestation
edge former
education basic law
electronic counter-countermeasuress
elopes
emergency tuyere
Emmerich Scholl serum
Emotival
evaporation-condensation
fish culture in running water ponds
framed interface
Gaspereau, L.
gear wheel milling machine
general export insurance
give sb. a piece of one's mind
half-ebb
Hapton
hemicytherura kajiyamai
heptadecanoate
heteroarenes
high speed data
Hitchita
injector kier
Jacobeans
john wains
leak-testing apparatus
Lipotyphla
lower critical solution temperature (lcst)
lustmaking
magnetic field winding
Make a pitch
mansionlike
marine gravimetric prospecting
matrix-algebra tableau
methyl-n-butyl ketone
methylnonyketone
mixed interlock
mortmains
multihued
neshaminy
networking initial condition
non cash items
non-continuous series
non-specificity
offshore sediment
order pointer
osseous labyrinth
periodic blow-down
permeabilising
phacus tripteris
plumply
plutonium oxychromate
plyalectasis
polyene ketone
Portuguese empire
positive chronotropic action
power control microcode
prespa
pulse advancing
punnetts
Ranunculus glacialiformis
real estate bonds
sailorman
siderurgy
speed under load
standard sensitometer
Syringa L.
table type low and medium speed centrifuge
three wire insulated neutral system
three-tube video projector
Togouchi
transmissin electron radiography
transsphenoidal surgery of pituitary fossa tumors
veneer stone anchoring
weft clearer
western buttercups
Wien-bridge oscillator
witter
WTDF
ypressede
zero spin