时间和频率标准

WHITE HOUSE President Donald Trumps administration wants to shut down U.S. government radio stations that announce official time, a service in operation since World War II. WWV and WWVB in the state of Colorado and WWVH on the island of Kauai in the

发表于:2018-12-01 / 阅读(100) / 评论(0) 分类 VOA标准英语2018年(九月)

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(106) / 评论(0) 分类 数学英语

Welcome to Words and Their Stories, from VOA Learning English. On this program we explore common expressions in American English. Like all languages, our expressions come from everywhere. They come from nature, sports, and food. They come from money,

发表于:2018-12-08 / 阅读(175) / 评论(0) 分类 2018年VOA慢速英语(七)月

Lesson 37 The Olympic Games 奥林匹克运动会 First listen and then answer the question. 听录音,然后回答以下问题。 When was the last time this country hosted the Olympic Games? The Olympic Games will be held in our country in four ye

发表于:2018-12-08 / 阅读(272) / 评论(0) 分类 新概念英语第二册

Specific times Question When do you . . . (present tense) I usually/always . . . in the evening at 9:00 on Mondays before dinner after I eat lunch when I get home When did you... (past tense) I (past tense) last night before class while I was eating

发表于:2018-12-17 / 阅读(56) / 评论(0) 分类 英语词组对话

1.Airport pick-up 接机 A:Anybody picks you up at the airport? B:My secretary arranged it. I just hope the chauffeur will show up. A:有人去机场接你吗? B:我的秘书安排了,我只是希望司机能到。 2. Book a hotel 订酒店 A: Who booked the hotel for you? B

发表于:2018-12-26 / 阅读(58) / 评论(0) 分类 天天商务口语

So I became very err.... captivated by computer. 我完全给计算机迷住了 And a computer to me was still a little mysterious 当然计算机对我而言仍然有些神秘 cause it's at the other end of wire,I had never really seen the actual co

发表于:2018-12-27 / 阅读(55) / 评论(0) 分类 名人传记

by Mignon Fogarty Many parts of the world are moving from standard time to daylight-saving time (also called summer time) this week, so I thought it would be a good time to talk about the phrase daylight-saving time and time in general. The original

发表于:2019-01-02 / 阅读(76) / 评论(0) 分类 英语语法 Grammar Girl

Three radio stations in the United States mainly broadcast one thing: the official time. The three are radio stations WWV and WWVB, in the state of Colorado, and WWVH, on the island of Kauai in Hawaii. They send out signals that are used by millions

发表于:2019-01-03 / 阅读(91) / 评论(0) 分类 2018年VOA慢速英语(九)月

Frame In time division multiplexing systems, Frame is a sequence of time slots each containing a sample from one of the channels carried by the system. The frame is repeated at regular intervals, (nor

发表于:2019-01-03 / 阅读(83) / 评论(0) 分类 电信英语

Grammar Girl here. Many parts of the world are moving from daylight-saving time (also called summer time) to standard time this week, so I thought it would be a good time to talk about the phrase daylight-saving time and time in general. Most usage g

发表于:2019-01-07 / 阅读(83) / 评论(0) 分类 英语语法 Grammar Girl

Economics Report - How Gold Became the Gold Standard for Trade 经济报道 - 黄金是如何成为贸易金本位的? This is the VOA Special English Economics Report. 这里是美国之音慢速英语经济报道。 The best example of something

发表于:2019-01-12 / 阅读(117) / 评论(0) 分类 2012年VOA慢速英语(四)月

时差 说起时差大家或许立马会想到: Time difference 但它只能用来描述地理上的时间差异: What's the time difference between New York and Shanghai? 纽约和上海时差多少? 谈到具体的时差,中文里会说快、

发表于:2019-01-17 / 阅读(54) / 评论(0) 分类 美国文化脱口秀

Well, I was born with a rare visual condition called achromatopsia, which is total color blindness, 我出生在一个色彩极少的世界,世界只有明暗之分,这叫做全色盲 so I've never seen color, 所以我不知道什么是颜色, a

发表于:2019-01-18 / 阅读(78) / 评论(0) 分类 TED演讲国际问题篇

Voice 1 Hello. Im Rachel Hobson. Voice 2 And Im Mike Procter. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Welcome to our li

发表于:2019-01-19 / 阅读(74) / 评论(0) 分类 环球英语 Spotlight

(97) A: Do you usually buy in large quantities? B: Our standard order is 500cases at a time. A: We can handle an order that size very easily. B: We'll let you know the next time we need to place an or

发表于:2019-02-02 / 阅读(81) / 评论(0) 分类 实用英语

Disappearing words 消失的文字 Kate: Hello, I'm Kate Colin and this is '6 Minute English' - and thanks to Jackie Dalton for joining me today. Good Morrow Jackie! Jackie: Ehpardon? Kate: Good Morrow! I beseech thee, whence comest thou? Jackie: ErmmKat

发表于:2019-02-06 / 阅读(81) / 评论(0) 分类 六分钟英语

GRE 中容易考到的统计题型主要就有以下七种 1。mode(众数) 一堆数中出现频率最高的一个或几个数e.g.modeof1,1,1,2,3,0,0,0,5is1and0 2。range(值域)一堆数中最

发表于:2019-02-07 / 阅读(92) / 评论(0) 分类 英文语法词汇

有了10年超级签证,美国旅游真方便。今天,听Jenny和Spencer的实用指南。帮你省时、省力、又省钱,避免美国旅行的坑。 关键词: Travel in the States: 去美国旅行 Timezones: 时区 There are 6 timezones

发表于:2019-02-15 / 阅读(59) / 评论(0) 分类 美国文化脱口秀

S no option offered 无期权出售 S split or stock divided 拆股或股息 S signed 已签字 s second; shilling 秒;第二;先令 SA semi-annual payment 半年支付 SA South Africa 南非 SAA special arbitrage account 特别套作账户 SAB s

发表于:2019-02-26 / 阅读(91) / 评论(0) 分类 实用英语
学英语单词
Abelian extension
acentricdicentric translocation
acid-frac
acoustical inertance
alternating-current continuous waves
aluminous cement
amplitude-frequency curve
Anglo-Saxon Tax System
Annbank
anther-wing
antimoniums
aqar
arcuks
attention handling
bar-frame
barcoo r. (cooper creek)
beat sb hollow
bifurcated-rivet wire
bottom-up method
box furnace
carnists
cbsg
Cebuan
celebrity gap
chai
comdg.
Could eat a horse
CS(chondrosarcoma)
data keyboard
dimethyloxalylglycine
disc winding
display stop interrupt routine
DPTI/TTI
equilux sphere
error estimate
ever-frozen
expla
extrinsic photoconductor
family schistosomatidaes
Galium acutum
gauge-length
gawelok
getter tab
giantin
glutamatergic
gravic
hawkinson
hetero typical fibers
higher plane curve
hubbing steel
Humrosol
hydrocauline
Ilerh
jakobshavn
jurg
Karawang
Konradsreuth
laser-produced plasma
ligamentum pectinatum iridis
lithoxyl
mail album
masterworks
Matthias rules
melting period
method of magnitude production
microphone hiss
Montalbo
Musan-gun
nickel-cobalt alloy (electro)plating
nivcillin
open circuit battery
phosphoform
pilosulose
pondward
poolers
priestman dredger
pruning-knife
re-hiring
record year
refinancing
Ripuary
rundale
sandpapering with water
second-order diffraction wavelength
Show me a liar, and I will show you a thief.
side-elevation
sparrow dominoes
supergroup assembly link
talesfore
tetratohedrism
the pursuit of happiness
thread-waisted wasp
three-monthly
to agree with
topoanesthesia
tsarevitches
unpopulate
vaulting shaft
vibrating loader
victoria
Wikipediaing
wildlife parks