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(635) / 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(235) / 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

发表于:2018-12-05 / 阅读(206) / 评论(0) 分类 成长的烦恼第四季

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

发表于:2018-12-16 / 阅读(207) / 评论(0) 分类 美国习惯用语

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

发表于:2019-01-04 / 阅读(186) / 评论(0) 分类 英语语法 Grammar Girl

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(165) / 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

发表于:2019-01-25 / 阅读(190) / 评论(0) 分类 英语每日一词

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(204) / 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

发表于:2019-02-05 / 阅读(166) / 评论(0) 分类 阅读空间

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(161) / 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(224) / 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(141) / 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(208) / 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(198) / 评论(0) 分类 影视英文歌曲
学英语单词
...and such
AHP-200
ANTIPROPULSIVES
archdove
aromatic sulfonic acid
artcher
aslant
ASTE
barricade
bushiest
butt-jointed shell course
Castleside
charles dudley warners
chemolytical
chromo-ureteroscopy
closed circulation
colour-subcarrier generator
complementary phenomenon
computing complexity
criminal bankruptcy petition
defraggers
dense-leaved elodea
diazo butter
dioptrically
electric-dipole moment
embarkations
enj
external uterine orifice (external orifice of uterus)
federal legislation
Fourier's 1st law
Friday Harbor
Frimley
fund cost
glass manufacturer
guiding bone
handsfree
head sth off
heterogamus
hot-tub
hydrops inflammatorius
improvised performance
indigenousnesses
inductive projective system
insured exporter
interruption of work
irregular corolla
Juncus leptospermus
kalpa
Lactinex
Ligamentum stylohyoideum
linalool acetate
line information
lived
lyrurus tetrixes
macula corneae
marto
molestie
monoblock pump
nag at
node listing
nonocellular
o'lilly
operand store
operoseness
oppositon benches
order of a determinant
Ornstein-Uhlenbeck operator
Ozinskiy Rayon
pelvic rhabdomyosarcoma
petticoatery
phage heterozy-gosity
piped
planetules
plot twist
postlabium
quick cement
random access card equipment
recto-urethral
retransmission technique
ring liquid tank
SALMRA
Santa Fé, Prov.de
scanning slit plane
shensiensis
shottie
showery precipitation
side stand
size dimension
specific printer
SRSG
stake pocket
steroidogenic hyperlipidemia
surface liquid cooler
talk button
TR-tube
ungarrisoned
wassily
Wilster
word chain operation
WZA
ylow
young iron