[网络] 独立样本;样本均数比较采用成组

The way we sample much of the world's oceans, to see what's living down there, is pretty basic: Ask fishermen. Or just stick a net down there, and examine what we catch. Neither method is ideal. Because you basically catch the fish and kill them. Phi

发表于:2018-12-24 / 阅读(170) / 评论(0) 分类 2016年Scientific American(十一)月

Problems with samples A: John? Can you come over here for a second? B: Certainly, Mr. Emory. What can I do for you? A: I need you to take a look at these samples. I think there are a few problems. B: Sure. Let me look over them and Ill bring them bac

发表于:2018-12-25 / 阅读(150) / 评论(0) 分类 办公室英语口语

最佳RB男歌手:Ne-Yo《Miss Independent》 Ne-Yo - Miss Independent Oo there something about just something about the way she moved I cant figure it out, there''s something about her (about her) Say oo there something about, What kinda women wan

发表于:2019-01-03 / 阅读(173) / 评论(0) 分类 格莱美获奖歌曲

Mars Rover to Begin Taking Soil Samples This Week Jessica Berman NASA engineers say the Mars rover will begin taking its first soil samples as soon as it departs the landing platform . Engineers say t

发表于:2019-01-04 / 阅读(260) / 评论(0) 分类 VOA2004(上)--各类新闻

歌曲 : Miss independent 艺人 : Ne-Yo 音乐星级 : ★★★★ 所属专辑 : Year Of The Gentleman 发行年代 : 2008 风格 : RB Ne-Yo(原名Shaffer C. Smith)出生于美国Arkansas州一个音乐世家,自幼生活在一个单亲家庭,被母亲抚养长大。为了使Ne-Yo有更好的发展

发表于:2019-01-11 / 阅读(208) / 评论(0) 分类 节奏布鲁斯

By Peter Fedynsky Moscow 22 January 2008 The independent presidential bid of Russia's Mikhail Kasyanov is in jeopardy after the Russian prosecutor accused his campaign of forging signatures on a petition required to register for the election. VOA's P

发表于:2019-01-13 / 阅读(167) / 评论(0) 分类 VOA标准英语2008年(一月)

Independent Cambodian Radio Station Runs Without Jailed Owner A few days a week, radio station owner Mam Sonando would go on air to talk to callers. Now, the station and its listeners have to do without him, as he sits in prison across town. The DJ w

发表于:2019-01-13 / 阅读(196) / 评论(0) 分类 VOA标准英语2012年(八月)

A Sudanese woman casts her vote as representatives of candidates observe at a polling station during the second day of Sudan's first multiparty elections in decades, 12 April 2010 An online platform designed to facilitate independent monitoring of th

发表于:2019-01-13 / 阅读(178) / 评论(0) 分类 VOA标准英语2010年(四)月

Independent Media Emerge in Tripoli After Fall of Gadhafi Independent news media are beginning to emerge in the Libyan capital, Tripoli, two weeks after the fall of Libyan leader Moammar Gadhafi. They are pledging to help build democratic institution

发表于:2019-01-13 / 阅读(161) / 评论(0) 分类 VOA标准英语2011年(九月)

Study Finds More Women in Independent Films Ava DuVernay loves making movies, especially from the perspective of a black woman. She has directed three documentaries and two features also known as narrative films, all independently produced. She says

发表于:2019-01-14 / 阅读(185) / 评论(0) 分类 VOA标准英语2013年(四月)

ye~~ye~~ye~~ye~~ ye~~ye~~ye~~~ Oo there something about just something about the way she moved I cant figure it out, there's something about her (about her) Say oo there something about, What kinda women wants you but you dont need you Hey, i cant fi

发表于:2019-01-14 / 阅读(168) / 评论(0) 分类 节奏布鲁斯

Margaret was very close to her mom. They had always been best friends. Margaret was now 25 years old. It was time for her mom to let her go out on her own. You have to be more independent, said her mom. Margaret didn't want to. I don't want to leave

发表于:2019-01-24 / 阅读(258) / 评论(0) 分类 英语第4级听力-English Level 4

By Deborah Tate Capitol Hill 06 September 2007 A report by a panel of retired senior U.S. military officers has concluded that Iraq's security forces will not be able to take over the country's security from U.S. troops for 12 to 18 months. The repor

发表于:2019-01-31 / 阅读(237) / 评论(0) 分类 2007年VOA标准英语(九月)

By Kurt Achin Seoul 07 November 2007 All bets are off now in South Korea's presidential race. With just a little more than a month to go before the vote, a new independent candidate may draw support away from the former Seoul Mayor who, until now, ap

发表于:2019-01-31 / 阅读(196) / 评论(0) 分类 VOA常速英语2007年(十一月)

RB神童Ne-Yo的单曲《Miss Independent》正在英国单曲榜激烈打榜中。 虽然出道时间不长,但颇具才气的Ne-Yo通过三年来的这三张质量不俗的专辑已经成为当今美国年轻一代的RB音乐人的代表,年纪轻轻的他已经成为格莱美奖提名的常客,在当代RB音乐类的奖项中,近两年每年发

发表于:2019-01-31 / 阅读(285) / 评论(0) 分类 音乐咖啡厅

By Chad Bouchard Jakarta 07 February 2007 The Indonesian government has announced it is withholding samples of a deadly bird flu virus in light of its new partnership to develop a vaccine with a U.S. drug company. As Chad Bouchard reports from Jakart

发表于:2019-02-05 / 阅读(298) / 评论(0) 分类 2007年VOA标准英语(二月)

Miss Independent Ne-Yo It's something about, just something about The way she moved I cant figure it out. There's something about her (About her) Say ooh. There's something About kinda women that want you, but dont need you Hey I can't figure it out

发表于:2019-02-07 / 阅读(185) / 评论(0) 分类 好听的英文歌曲

Independent Women 独立女人 歌手:Destiny's Child 专辑:kdbtest Lucy Liu... with my girl, Drew... Cameron D. and Destiny Charlie's Angels, Come on Uh uh uh Question: Tell me what you think about me I buy my own diamonds and I buy my own ring

发表于:2019-02-08 / 阅读(203) / 评论(0) 分类 好听的英文歌曲

BEIJING, Jan. 29 (Xinhua) -- The International Cycling Union (UCI) has announced its disbanding of the Independent Commission citing lack of coorperation from fellow anti-doping angencies. UCI president Pat McQuaid said in a statement Tuesday that th

发表于:2019-02-18 / 阅读(208) / 评论(0) 分类 英语新闻

Dialogue 1 Mark: I can't believe I'll be going to college next month. It seems like just yesterday I was starting my freshmen year of high school. 马克:我简直不敢相信我下个月就要上大学啦。感觉高一新入学还是昨天的事情

发表于:2019-02-23 / 阅读(186) / 评论(0) 分类 英语PK台
学英语单词
absolution day
acetogeneses
agitation type flotation machine
aid in planning materials flow
allowable dimension variation
amorphous-silicon thin-film transistors
antimasonry
apparent relaxation
at a speed of
ateles geoffroyi panamensis
barges
behenolic acid
beta barrier
bottle - nosed dolphin
C.C.P.A.
calculableness
chronic interstital hepatits
colour mask
cooling end
crawler mounted crane
DDD
Digitaria ternata
double kick
downwardness
ecam
effrenous
electron operation desk of EPMA
episcopizes
equalizing mechanism
eurytopicity
exclusive selling agency
exhuast gas desulfurization
fall away
fort warren
genus tribuluss
guard gauge
half-round nosing
headmark
hog-rubber
hydrargyri subchloridum
hydraulic tipping gear
hydrogenisation
hypocycloid of four cusps
ichthyie
inequality
isometric (al) granular structure
luggage transport rates
machinery casting
Management and Monitoring Tools
martensites
Mess-John
military braid
mobile hotspot
nayak
neopomacentrus azysron
nerdy
Nisland
noncrippled
nonirritating
Office of Censorship
optic perineuritis
p-benzenediol
pentaerythrityl
pH value
pink-collar
portable refrigerator
potassium rhodanate
primary caretaker
primer-extension
progestationaal period
pyriphlegethon
re-entered
realistic image
rhadomancy
right-brains
Robertson's pupil
samadh
sautest
schleyers
shagginesses
silicon microstructure
stefanoni
subcrop
take somebody to the woodshed
telega(u)ge
the reverse side of the coin
thiele melting point apparatus
thrashing
toxcity
transformer network
tusheries
type in something
unperfecting
urbanized
urethral catheter with rotation tip
violent change
washougal
weld solidification rate
wheat-land
whitethorn
yeast extract paste
zelos