un. 球面透镜制造设备

Text Can you prove that the earth is round? Go ahead and try! Will you rely on your senses or will you have to draw on the opinions of experts? WHY DO WE BELIEVE THAT THE EARTH IS ROUND? George Orwell Somewhere or other — I think it is in the prefa

发表于:2018-12-04 / 阅读(280) / 评论(0) 分类 大学英语精读第四册

Our story today is called The Diamond Lens. It was written by Fitz-James O'Brien. We will tell the story in two parts. Now, here is Maurice Joyce with part one of The Diamond Lens. When I was ten years old, one of my older cousins gave me a microscop

发表于:2018-12-08 / 阅读(560) / 评论(0) 分类 2018年VOA慢速英语(二)月

Do you know so many of you will climb into your cars today perhaps to shuffle your children to soccer, to football, make their (refer to the cars) run to the grocery store. But do you also know what's

发表于:2018-12-11 / 阅读(156) / 评论(0) 分类 万花筒2006年

AMERICAN STORIES - Short Story: The Diamond Lens by Fitz-James O'Brien (Part 2) Now, the Special English program, AMERICAN STORIES. (MUSIC) Our story is called The Diamond Lens. It was written by Fitz-James O'Brien. Today we will hear the second and

发表于:2018-12-16 / 阅读(141) / 评论(0) 分类 2011年VOA慢速英语(六)月

Nose bridge 鼻中 Tip 脚套 Temple 脚丝 Plating 电镀 Printing 印字 Lase 镭射 Spectacle frames 眼镜架 Sunglasses 太阳眼镜 Sports spectacles 运动眼镜 kid's eyewear 儿童眼镜 Reading glasses 老花镜 Contact lens 隐形眼镜 Gl

发表于:2018-12-18 / 阅读(146) / 评论(0) 分类 英文语法词汇

北京奥运28大项 参与,竞争,分享,进步 Handball 手球 PLAYING TIME 比赛时间 英文原文 The normal playing time for all teams with players of age 16 and above is 2 halves of 30 minutes. The half-time break is normally 10 minutes. The ball is made of leat

发表于:2018-12-30 / 阅读(253) / 评论(0) 分类 奥运28大项比赛

Grammar Girl here. It's a rare bonus episode! Today's topics are generating story ideas and overcoming writers block. Matt from College Park wrote in saying that the podcast has helped his writing, and now his only problem is finding something to wri

发表于:2019-01-02 / 阅读(173) / 评论(0) 分类 英语语法 Grammar Girl

Our story is called The Diamond Lens. It was written by Fitz-James O'Brien. Today we will hear the second and final part of the story. Here is Maurice Joyce with part two of The Diamond Lens. When I was a child, someone gave me a microscope. I spent

发表于:2019-01-03 / 阅读(392) / 评论(0) 分类 2018年VOA慢速英语(三)月

Declassify US government documents and witness testimony from former or retired US military personnel confirm beyong any doubt the reality of ongoing UFO incursions at nuclear weapon sites. When I say UFO, the witnesses have described this craft as d

发表于:2019-01-08 / 阅读(182) / 评论(0) 分类 CNN2010年(十)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. When we think about how to represent sound visually, most of us probably picture those volume-dependent sine waves. But thats not how John Stuart Reid

发表于:2019-01-08 / 阅读(158) / 评论(0) 分类 Scientific American(一)月

If youve ever had a garden or grown flowers in a window box, youve probably heard that you shouldnt water your plants at high noon because their leaves might scorch. Now a study in a journal called New Phytologist confirms that water droplets can foc

发表于:2019-01-08 / 阅读(194) / 评论(0) 分类 Scientific American(一)月

AMERICAN STORIES - Short Story: The Diamond Lens, Part 1, by Fitz-James O'Brien SHIRLEY GRIFFITH: Now, the Special English program, AMERICAN STORIES. (MUSIC) Our story today is called The Diamond Lens. It was written by Fitz-James O'Brien. We will te

发表于:2019-01-12 / 阅读(161) / 评论(0) 分类 2011年VOA慢速英语(六)月

LULU GARCIA-NAVARRO, HOST: Navajo leaders are scrambling to find a new owner for the West's largest coal-fired power plant, the Navajo Generating Station. For four decades, both the Hopi and Navajo tribes have relied heavily on jobs provided by the c

发表于:2019-01-17 / 阅读(165) / 评论(0) 分类 2018年NPR美国国家公共电台11月

You see the larger wing area here. 你们可以看到这儿有面积更大的翅膀。 Also, clearly, it was such a powerful thing,we wanted to try and bring other people but we couldn't figure out how to do it. 而且,这还是件很有影响力的事

发表于:2019-01-18 / 阅读(147) / 评论(0) 分类 TED演讲娱乐篇

生活大爆炸第一季第九集_3:The Cooper-Hofstadter Polarization Okay, I'm leaving for the conference. 好啦,我要去参加会议了。 -Sheldon:Have fun presenting my lucky hunch. 祝你报告我的小运气愉快。 -Leonard:Shel, I

发表于:2019-01-28 / 阅读(143) / 评论(0) 分类 生活大爆炸第一季

每年,《时代周刊》都选出让世界更美好、更智能、更有趣的发明。今年的也能让你大吃一惊哦! 1.The Levitating Lightbulb 1.悬浮灯泡 Since he was a child, Simon Morris has been obsessed with making objects float

发表于:2019-02-01 / 阅读(215) / 评论(0) 分类 阅读空间

眼镜专业术语单词 Nose bridge 鼻中 Tip 脚套 Temple 脚丝 Plating 电镀 Printing 印字 Lase 镭射 Spectacle frames 眼镜架 Sunglasses 太阳眼镜 Sports spectacles 运动眼镜 kids eyewear 儿童眼镜 Reading glasses 老花镜 Contact lens 隐形眼镜 Glass optical lense

发表于:2019-02-06 / 阅读(139) / 评论(0) 分类 英文语法词汇

For one thing, if this was just the Ebbinghaus effect, 首先,如果真是艾宾浩斯效应, then we would expect the moon illusion to disappear for pilots flying high above the clouds 那么我们应该预期月球错觉对于空中的飞行员来

发表于:2019-02-13 / 阅读(158) / 评论(0) 分类 TED演讲教育篇

Nose bridge 鼻中 Tip 脚套 Temple 脚丝 Plating 电镀 Printing 印字 Lase 镭射 Spectacle frames 眼镜架 Sunglasses 太阳眼镜 Sports spectacles 运动眼镜 kid's eyewear 儿童眼镜 Reading glasses 老花镜 Contact lens 隐形眼镜 Gl

发表于:2019-02-13 / 阅读(150) / 评论(0) 分类 实用英语

Under this head I reckon a monster which, by the various names of Fin-Back, Tall-Spout, and Long-John, 在这个项目下,我不禁想起一种有着许多名称的巨兽来:脊鳍鲸,高喷鲸,长约翰鲸, has been seen almost in every sea and is c

发表于:2019-03-10 / 阅读(184) / 评论(0) 分类 白鲸记
学英语单词
activities applets
anaphylactoid crisis
anderss
answer Scotch fashion
asiopodabrus kuriharai
b-hole
basic technique
be upset about
bryohaplocladium microphyllum
carbon dioxide cryotherapy
cardiovascular radiology
cast iron track box
clock driver
cold-roll forming
communication-persuasion matrix
compartmentalize
convection type superheater
coupling print
daggled
data unit
dike swarm
direction of tide
dispenseth
do ... porridge
driver license
Edinbain
electron-dot symbol
emergency trip header
enneastyle
Equity Withdrawal
ex bonus
exoster
file consolidation
general affairs office
globalisations
Gosplan
Graham Little syndrome
grand schemes
Habakkuk
heater warm-up time
homodiploid
homotaxic
individual pollution index of soil
input shorted output admittance
inter-community
lace-fern
large-signal analysis
learning by contract system
lipogenic
liquid seal method
margin sample
musculus transversus dorsalis medius
newfanglement
non-imitations
omnigraph
oxtriphylline
pass receiver
penetration range
phyla
potential source rectifier excitation
power/knowledge
presonar
prevenance
priming
prompt' cash payment
protomullets
radio-frequency induction coil
rear axle tube
red ash
reference record
retinotopical
rhamnus californicuss
Salt Springs
seating arrangements
secretting
sediment
seromic
side wall echo
Spotorno
stacked array
starting position
Suriānwān
synchronous inductor
tabanids
tactical awareness
Tantalo-rutile
the third wheel
theodoridis
Tollerton
transmission-line of information
transport of drug
tristly
two communities theory
typically proportional sampling
unearned discound
unicity
unselectively
uroxanates
water tables
wild claries
year-round education
Yumasofts