螺距公差(螺纹);节距公差(齿轮)

Exercise 1-1: Rubber Band Practice with Nonsense Syllables Take a rubber band and hold it with your two thumbs. Every time you want to stress a word by changing pitch, pull on the rubber band. Stretch it out gently, don't jerk it sharply. Make a loop

发表于:2018-12-03 / 阅读(187) / 评论(0) 分类 2015年ESL之商务英语

In this Business English Podcast, were going to look at delivering an elevator pitch. A sales pitch is a presentation designed to introduce a product or service in order to convince people to buy it. An elevator pitch is a very short presentation des

发表于:2018-12-05 / 阅读(316) / 评论(0) 分类 商务英语演讲课

Now, the VOA Learning English program, Words and Their Stories. On this program, we tell about common expressions in American English and explain how to use them. Today we talk about expressions involving Los Angeles, California. Los Angeles is the b

发表于:2018-12-07 / 阅读(264) / 评论(0) 分类 2017年VOA慢速英语(二)月

Why would a U.S. Government agency specializing in administering civilian foreign aid and development assistance, concern itself with religious freedom in the countries where it works? At USAID, we see freedom of worship as an essential element in ou

发表于:2018-12-16 / 阅读(156) / 评论(0) 分类 VOA标准英语2018年(八月)

As a child, the commentator went door to door with his mother to share the tenets of the Jehovah's Witnesses. The experience led to his belief that tolerance is the foundation of freedom and liberty Welcome to This I Believe, an NPR series presentin

发表于:2018-12-19 / 阅读(152) / 评论(0) 分类 2007年NPR美国国家公共电台

Idiom: Make a pitch ( make a proposal ) Hit the book: Veterinarian Drowning Scary Yell Labrador Retriever Kangaroo Sanctuary

发表于:2018-12-27 / 阅读(193) / 评论(0) 分类 趣味青春英语

[00:00.00]In Paris ,they bought many souvenirs. [00:04.74]Then they took a train to Berlin, [00:07.21]the capital of Germany. [00:09.39]They visitd many places, [00:11.37]including the famous Brandenburg Gate. [00:14.82]The last country on their trip

发表于:2018-12-29 / 阅读(254) / 评论(0) 分类 北师大版初中英语七年级下

Can you name those notes? Probably notperhaps one in 10,000 speakers of European languages has perfect pitch, the ability to recognize a note without having heard any reference note first. But theres a much better chance you could successfully name

发表于:2019-01-02 / 阅读(184) / 评论(0) 分类 60秒科学

By Elizabeth Lee Washington 23 September 2009 Libyan leader Moammar Gadhafi addresses the general debate of the 64th session of the U.N. General Assembly, in New York, 23 Sep 2009 Libyan leader is in New York and spoke at the United Nations General

发表于:2019-01-13 / 阅读(150) / 评论(0) 分类 VOA标准英语2009年(九月)

Egyptian Islamist Calls for Tolerance of Coptic Christians Violence between Egypt's Coptic Christians and conservative Muslims has led to calls for tolerance from some unlikely sources. The allegiance of the men gathered outside a mosque in central A

发表于:2019-01-14 / 阅读(203) / 评论(0) 分类 VOA标准英语2011年(五月)

【俚语】 pitch in 一起帮忙,作出贡献 最常见得意思是一起帮忙,做出贡献(to join in and help someone with something). 注意:pitch in还有其他的意思: 1.分担共同担负的费用;捐献(某物);(以某物)支援:

发表于:2019-01-17 / 阅读(162) / 评论(0) 分类 英语俚语天天说

今天我们要学的词是zero tolerance。 Zero tolerance, 零忍耐,就是绝不姑息迁就的意思。中国游泳选手欧阳鲲鹏因为药检被查出使用合成类固醇,被罚终身禁赛。 Chinese officials say it shows that a 'zero-

发表于:2019-01-25 / 阅读(159) / 评论(0) 分类 英语每日一词

BEIJING, Jan. 5 (Xinhua) -- For the first time, China has fined overseas companies for price-fixing on the mainland, which is a strong signal that the country will not tolerate foreign cartels any more and is committed to maintaining market disciplin

发表于:2019-01-25 / 阅读(333) / 评论(0) 分类 英语新闻

今天我们要学的词是zero tolerance。 Zero tolerance, 零忍耐,就是绝不姑息迁就的意思。中国游泳选手欧阳鲲鹏因为药检被查出使用合成类固醇,被罚终身禁赛。 Chinese officials say it shows that a 'zero-

发表于:2019-01-25 / 阅读(163) / 评论(0) 分类 英语单词荟萃

We might think perfect pitch is an innate talent. Well, a study in the American Journal of Human Genetics is providing some evidence for that. Perfect pitch, aka absolute pitch, is the rare ability to name or recreate musical notes like A or middle

发表于:2019-01-30 / 阅读(209) / 评论(0) 分类 60秒科学

RIO DE JANEIRO, Aug. 22 (Xinhua) -- Former Brazil international striker Adriano admits his return to Flamengo is his last chance to revive his stalled career. Adriano, who has played just nine games in the past two years, was signed by his former clu

发表于:2019-02-05 / 阅读(232) / 评论(0) 分类 英语新闻

今天我们要学的词是pitch。Pitch可以是推销的意思,既可以作名词也可以作动词。At the World Economic Forum in Davos, Russia's Prime Minister Dmitry Medvedev made a strong pitch for foreign investment in Russia. 在达沃斯世

发表于:2019-02-06 / 阅读(152) / 评论(0) 分类 英语单词荟萃

今天我们要学的词是all star。 All star全明星。All star game全明星赛。The 80th Major League Baseball All-star Game will be played on Tuesday night, 美国职业棒球大联盟第80届全明星赛星期二晚上举行。 Tickets for t

发表于:2019-02-07 / 阅读(151) / 评论(0) 分类 英语每日一词

You're standing face-to-face with a professional in your industry who can help you advance your career. This is your chance to wow this person with a strong handshake, bright smile and direct eye contact, followed by a witty comment that initiates a

发表于:2019-02-07 / 阅读(162) / 评论(0) 分类 英语口语

今天介绍的俚语是pitch in,pitch in是什么意思呢?最常见得意思是一起帮忙,做出贡献(to join in and help someone with something). 例句: If you could pitch in a little we'd be finished quicker. 如果你能帮忙一下,

发表于:2019-02-09 / 阅读(185) / 评论(0) 分类 美国俚语
学英语单词
absolute magnitude effect
all show and no go
almond willows
assrun
at a brush
Baroness Karen Blixen
barrel chair
Bl. D.
Blackmore Park
bopyrusiasis
buying power
carvage
caulifloret
Chaturdashi
chinese herbal
coherently diffracting domains
conventional taxonomy
costiasis
cribriform carcinoma of lung
crump
direct multiplex channel
disgorgement of profits
domestic energy requirement
double row single shear chain lap rivet joint
double screen sizer
Downtownian
drop from the clouds
Dundaff Hill
dyer's weed
earnest
edat
eleostearic acid
exciting converter
external modulator
fishery examination boat
flangings
fledgeling
flockiest
fluvio
frequency-domain ip method
FSBF (full scale burner facility)
gene mapping
genus carchariass
give sb a svere rating
gooseneck ventilator
ground water infiltration
horizontal internal cylindrical honing machine
if it hadn't been for
infectosome
infringe a right
instrument compartment
insulaspis gloverii
Kasano-hara
knurled roll
kuy
lifting apparatus
locally connected
lovekin
main exchange
marine pond extensive culture
mass spectroscopic
muchwhat
multi mask film
Napoleonville
net contributor status
neuropharmacologists
nigger rigged
nilpotent set
nut press
oppositional position
Oviedo, Prov.de
Pal(a)eontology
pattern analysis language
plym
potassium picrate
printing and dyeing
raster font
repeller
right-angle friction wheel
Ruisbroek
sca (single-channel analyzer)
scaler file
shaking-out machine
socket pipe
spindle-speed function
standard deadweight press tester
steerabilities
stroke type
subtone
swing bin
tapping field motor
target text
the paper
traversos
turn the heat on
unimpeded passage through
untreated timber pile
veneered wall
very high data rate dsl
volcanic ore deposit
warmdowns
well-proven