同位素光谱分析

Unit 12 DIALOGUE Ⅰ Nuclear Technology for Civil Use A: Does unclear technology mean anything to you? I've just been to an exhibition on the application of nuclear technology to civil use. Do you wan

发表于:2018-12-04 / 阅读(63) / 评论(0) 分类 新编大学英语教程

【今日基础词】Aspect 【Transcript】 A woman was singing. One of the guests turned to a man by his side and criticized the singer. What a terrible voice! he said, Do you know who she is? Yes, was the answer, She is my wife. Oh, I beg your par

发表于:2018-12-05 / 阅读(70) / 评论(0) 分类 听基础单词练听力

I'm sure that, throughout the hundred-thousand-odd years of our species' existence, and even before, 我十分确信在人类诞生以来的大概10万多年,甚至比这更长的时间里 our ancestors looked up at the night sky, and wondered what

发表于:2018-12-05 / 阅读(72) / 评论(0) 分类 TED演讲国际问题篇

Ever wonder what your French fries were fried in? Like bumbling burglars who leave fingerprints at a crime scene, cooking oils leave their own clues. And by measuring the carbon isotopes in French fries, University of Hawaii researchers found that on

发表于:2018-12-24 / 阅读(66) / 评论(0) 分类 Scientific American(一)月

Ancient Bones Reveal Ancient Diet, Lifestyle Scientists learned recently that fish was the main source of protein for people in southern Scandinavia many thousands of years ago. They also ate other animals that live in the water. The findings come fr

发表于:2019-01-03 / 阅读(56) / 评论(0) 分类 2018年VOA慢速英语(十)月

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Climate change is the great environmental challenge facing the world today, but maybe we should start calling it Climates Change. Because scientists who've

发表于:2019-01-08 / 阅读(96) / 评论(0) 分类 Scientific American(五)月

This is Scientific American's 60-second Science, I'm Steve Mirsky. Got a minute? Back on January 15th, US Airways Flight 1549 made that amazing water landing in the Hudson after both engines were taken out by Canada geese, which can weigh eight pound

发表于:2019-01-08 / 阅读(92) / 评论(0) 分类 Scientific American(六)月

Some people of Italian ancestry, like me, might have a surprise in the family treea man of east Asian descent, who was living and working 2,000 years ago in the boondocks near the heel of the Italian boot. The discovery is the first good evidence of

发表于:2019-01-08 / 阅读(88) / 评论(0) 分类 Scientific American(二)月

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. If youve ever wondered where the Earth came from, the answer, it seems, is blowin in the windthe solar wind. Or so say scientists who, after examining sola

发表于:2019-01-08 / 阅读(98) / 评论(0) 分类 Scientific American(七)月

AS IT IS 2016-04-26 Chernobyl, Risky Still, Thirty Years Later 切尔诺贝利三十年后风险仍在 Tuesday marks the 30th anniversary of the Chernobyl disaster, the worlds worst nuclear accident. The effects of the disaster are still felt today.

发表于:2019-01-12 / 阅读(90) / 评论(0) 分类 2016年VOA慢速英语(四)月

The first day of the experiment, we got out to our plot 实验的第一天,我们来到了实验地点, and a grizzly bear and her cub chased us off. 突然一头灰熊和她的熊宝宝出现,把我们赶跑了。 And I had no bear spray. But

发表于:2019-01-18 / 阅读(72) / 评论(0) 分类 TED演讲科学篇

Science and technology 科学技术 Going underground 向地底进军 A project to reveal more about all the carbon on Earth 旨在向人们揭示更多地球碳信息的项目 The Deep Carbon Observatory 深碳观测站 A world still full of secrets

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

Technology Going underground 科技 去地球深处 A project to reveal more about all the carbon on Earth 一个将会揭示更多关于地球上所有碳的秘密的项目 THE carbon cycle is the stuff of school books. 碳的循环在学校教科书中

发表于:2019-01-26 / 阅读(66) / 评论(0) 分类 经济学人科技系列

How old is the Earth? 地球的年龄有多大? Well, by counting the number of isotopes in a sample of rock that's undergone radioactive decay, 通过对岩石样品中正经历着放射衰变的同位素计数, geologists have estimated the Ear

发表于:2019-02-13 / 阅读(79) / 评论(0) 分类 TED演讲教育篇

But there were many technical difficulties to overcome. Holmes also neededor at least would very much have appreciatedsophisticated gadgetry of a sort that could make very fine measurements from tiny samples, and as we have seen it was all he could d

发表于:2019-02-17 / 阅读(59) / 评论(0) 分类 万物简史

A group of scientists from the Ohio State University are trekking to the top of the Quelccaya Ice in the Peruvian Andes to try to measure the effects of climate change on the world's glaciers. The average distance above sea level on the glacier is ar

发表于:2019-02-18 / 阅读(46) / 评论(0) 分类 英语新闻

WASHINGTON, Aug. 17 (Xinhua) -- Latest research shows that the Moon could be younger than previous estimates. The findings were published online Wednesday in the Nature journal. The prevailing theory of the Moon's origin is that it was created by a g

发表于:2019-02-19 / 阅读(69) / 评论(0) 分类 英语新闻

下面跟大家列出几种简单句和并列句 1. 简单句的五种形式: (1)主语+谓语(不及物动词); (2)主语+谓语(及物动词)+宾语; (3)主语+谓语+宾语+补语; (4)主语+谓语+间接宾语+直接宾语; (5)主语+系动

发表于:2019-02-19 / 阅读(50) / 评论(0) 分类 大学四六级阅读

So this previous year, I won the Intel International Science and Engineering Fair. 因此上一年,我赢下了国际科学以及工程大会活动的第一名。 I developed a detector that replaces the current detectors that Homeland Security has

发表于:2019-02-21 / 阅读(59) / 评论(0) 分类 TED演讲教育篇

As one commentator has put it, fleeing would mean selecting a slow death over a quick one. 有一位评论家说,逃跑意味着在慢死和快死之中选择慢死。 The death toll would be very little affected by any plausible relocation effort,

发表于:2019-02-25 / 阅读(62) / 评论(0) 分类 万物简史
学英语单词
5'-deoxy-5-fluorouridine
Abd ar-Rahman
allergic vasculitis syndrome
amphicribral bundle
Auzits
backward flow forming
benmont
Bible-bashing
bicoudate
black tracks
building construction
calamines
centralisations
cgrp (calcitonin gene-related peptide)
chelidonin
chickensaurus
condenser coupling
crimes of counterrevolution
cut off inventory
Cypripedium lichiangense
dapple grey
deformation velocity
desmone
detoxicated
Diacetyldapsone
Diospyros rhombifolia
dispatcher interface
economic determinants of fertility
eight millimeter projector
elliptical shaft
emergency-department
field-sequential color televisions
flyback time
FOC flag of convenience
Fort George G. Meade
Gdynian
geneosperma geneosporum
Goldbach problem
goofed
hand taper pin reamer
hell-bent for leather
hesitation period
ice and snow on runway
Idobutazina
imagers
in someone's book
indophenol oxidase
interlock of steel sheet piling
intermediate frequency generator
inverted repeat
isoflex
isoxaprolol
JC-SAT
kusachiite
Kālikot
lexemic
logistics transportation
manual of accounting instructions
micaceous iron-ore
microwave resonators
minibreak
movie-stars
nervous spirochetosis
non-divergent model
nozzle segment
nrt-VBR
op. cit
oxyhaemglobin
parachordoma
pasturer
percussive open-well machine
Peremptory Challenges
plunger spring cup
poetaminine
Princeton yellow
pull-chain
recessive complementaring
regurgitant fraction
remails
renshen jianpi pills
rohengen
sample weld
saturating of capillary
selenium mixture
semiospheres
sidbury
slackwires
splenectomise
stay-athome
Stropharia hornemannii
T-6
taua
teledynamic
Temnochilidae
tera floating -point operations per second
tigernut
urban migration
ursaphobic
vertical metal oxide semiconductor (vmos)
vever
vine-leaf
zincladle