双凸

double convex的用法和样例:

例句

  1. Just as a double convex lens enlarges, so a double concave lens reduces.正象双凸透镜可以放大那样,双凹透镜也可以缩小。

By Gary Garriott Broadcast: August 11, 2003 This is Bill White with the VOA Special English Development Report. 1)Sawdust is what remains after trees and logs are cut up into boards for building house

发表于:2018-11-27 / 阅读(599) / 评论(0) 分类 VOA2003(下)-发展与科学

Question: And so to our first 2) contender. Good evening. Your name, please. Answer: Good evening. Question: Your first time your chosen subject was answering questions before they were asked, this ti

发表于:2018-11-28 / 阅读(208) / 评论(0) 分类 疯狂英语2002年

今天要学的一个词组是:double standard。 Double standard是指双重标准。美国连锁商店沃尔马允许在中国的分店组织工会,却不允许在美国的商店组织工会。媒体报导的标题说:Critics claim double sta

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Mike: Hey Ben, if this Amy girl that you are so hot for already said yes to the movie, then what's your problem? Yes! Alright, the pressure's on. You miss this, you've got C A R O. Ben: My problem is that mum and dad have never really officially s

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今天我们要讲的美国习惯用语是:double standard.Double就是双重的, standard是标准。Double standard就是双重标准。也就是用不同的标准来要求和衡量,因此就会产生不公平的待遇或是让某人处于不利

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Grammar Girl here. Today's topic is double words, Guest-writer Bonnie Trenga writes, Todays todays podcast podcast is is about words that are doubled, such as had had and is is. Words grammar checker automatically alerts you when you repeat a word, b

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Grammar Girl here. Today's topic is the the, not as in the British '80s band, but as in what to do when a sentence calls for a the in front of a name or title that starts with a the, like The New York Times. So, listener Rob Jones asked, Do I have to

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Grammar Girl here. Todays lesson involves a question of Cathysor should that be a question of Cathy? By the end of this podcast, youll know which possessive to use. Now, Cathy has been wondering about the so-called double possessive and asks, Which i

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BEIJING, June 28 (Xinhuanet) -- The figure of adults with diabetes has risen to 347 million worldwide, which is more than doubled in the past three decades, according to a study published in the British journal Lancet. The study, which analyzed data

发表于:2019-01-11 / 阅读(149) / 评论(0) 分类 英语新闻

Double, Double play pause stop mute unmute max volume 00:0005:28repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plugin. OPHIRA EISENBERG, HOST: Now it's time to

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Single's Day itself developed here in China in the mid-1990's as a sort of an anti-Valentine's Day, with young single people using November 11th, or 1-1-1-1 on a digital calendar, to treat themselves to gifts. But in 2009, Alibaba took the first step

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今天我们要学的词是double standard。Double standard, 双重标准。美国国会众议院议长佩洛西指责共和党人在医疗保健改革的辩论中使用双重标准, House Speaker Nancy Pelosi accused Republicans of having a double

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RIO DE JANEIRO, April 4 (Xinhua) -- Fellipe Bastos scored two goals as Vasco de Gama defeated Alianza Lima 2-1 in their Copa Libertadores match at Lima's Alejandro Villanueva Stadium on Tuesday. The result lifts Vasco to the top of their group with 1

发表于:2019-02-03 / 阅读(174) / 评论(0) 分类 英语新闻

The Chong Yang Festival is celebrated on the ninth day of the ninth lunar month, and it is as such known as the Double Ninth Festival. Origins: The festival began as early as the Warring States Period (475 - 221 BC). According to the yin/yang dichoto

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今天我们要学的词是double-edged sword。 Double-edged sword, 双刃剑,指一件事情有利有弊。 The holiday break is a double-edged sword for the football team, because the championship game is on Jan. 2nd, 年底的假期对球队来说

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今天我们要学的词是double check。 Double check, 是复核的意思。The teacher told her students to double check their answers before handing in the exam, 老师告诉学生们,交卷之前应该反复检查自己的答案。They double

发表于:2019-02-06 / 阅读(141) / 评论(0) 分类 英语每日一词

LOS ANGELES, March 6 (Xinhua) -- Blake Griffin played a highly efficient game with 23 points, 11 rebounds and 11 assists, which gave the Clippers big support to stop the Bucks' streak with 117-101 victory. The 11 assists were Griffin's career high. H

发表于:2019-02-11 / 阅读(205) / 评论(0) 分类 英语新闻

NEW YORK, Feb. 19 (Xinhua) -- Jeremy Lin had 28 points and a career-high 14 assists to end the Dallas Mavericks six-game winning streak in New York Knicks' 104-97 victory on Sunday. Steve Novak made four 3-pointers in the fourth quarter in Knicks pur

发表于:2019-02-11 / 阅读(121) / 评论(0) 分类 英语新闻

今天要学的一个词组是:double standard。 Double standard是指双重标准。美国连锁商店沃尔马允许在中国的分店组织工会,却不允许在美国的商店组织工会。媒体报导的标题说:Critics claim double sta

发表于:2019-02-16 / 阅读(184) / 评论(0) 分类 学个词

哈利波特陪我们走过了十年,如今已经到了最后一步,长大了的何止是电影中的小演员们,还包括我们自己。 Double, double, toil and trouble. Fire burn and cauldron bubble. Double, double, toil and trouble. Someth

发表于:2019-03-02 / 阅读(183) / 评论(0) 分类 影视英文歌曲
学英语单词
acetyltransferase
acute brain disorders
Adler test
all serene
anhaline
average gene effect
black-graiest
boiler clearing
brace to
cane passage
cerebral deaths
complex-valued continue functions
coned cutter grinding wheel
cooled fuel injector
Cutato, R.
cyclin
defeathering unit
deferral
demurrage same despatch
diessel pile hammer
double cotton covered
double negation
double right rotation
electron lattice theory
electronically tunable filter
elytridium
endogenous sector
engine ignition
Epigeneium amplum
Eureka Program
extra deep drawing
face wall
financial item
following punch
freon filled foam
Gilchrist
globe fish liver oil
granularity roundness
guide post type die
have an a close eye on
hemiconcentic
hesperus pk.
hydraulic-lathe
Immelmann turn
inanitiation
index in terms of material products
internal phase angle
Kamyshevka
Karuni
long distance guided communication
long live facility
magnetically confined laser
Manuela
maraschinos
market price of labor
maximum waterplane
merging library file
Millitron
mixed bacteria
mobile commerce
move - in date
N-hydroxyethyliminodiacetic acid (HIMDA)
nemas
neutron source holder
Ngunju, Tg.
nonparticipatory
notarial attestation
oferre
oil orifice
organizational impairment
orthoschist
PDDU
Pesadas de Burgos
plasma(arc)cutting
pump suction head
quadpod
quiloflex
RBBX
rotala mexicana cham et.schl.var.spruceana koehne
RPI1640
run-resist
Rytel
sabicus
scanner interrupt
scientometrists
seawater bronze
share supervisor
silent system
sinfa
tail male
Thabana Ntlenyana
trundled
urethras
variable bit rate service
vision distance
water-based paint
wave number
waveplate
wet containment
xanthophyll
Yūtō