不放回随机抽样

By Nancy Steinbach HEALTH REPORT -May 8, 2002: Hormone Replacement Questioned This is the VOA Special English Health Report. An international team of health experts says there is no scientific evidenc

发表于:2018-12-07 / 阅读(139) / 评论(0) 分类 健康与环境

Broadcast: June 11, 2003 By Nancy Steinbach This is the VOA Special English Health Report. New research has found another danger of hormone replacement therapy1. The therapy studied involved the hormo

发表于:2018-12-07 / 阅读(219) / 评论(0) 分类 VOA2003(上)-国际经纬

QC procedure 品管流程 What issues do we need to address to work out new QC procedures? 在制定新品管流程之前,有哪些問題必須先處理? quality standard 品質標準 This year, Metro Factory experienced a noticeable decline in q

发表于:2018-12-31 / 阅读(240) / 评论(0) 分类 商务英语必备1000字

Random1) Thoughts-Party Last night,pressured by well-intentioned friends,for the first time in months,I came out of writers seclusion and attended a cocktail party which is another word for a social gathering.So there I was,trapped in a crowded roo

发表于:2019-01-01 / 阅读(269) / 评论(0) 分类 英语沙龙

1.audit 审计 2.attestation 鉴证 3.credibility 可信赖程度 4.audit of financial statements 财务报表审计 5.agreed-upon procedures 执行商定程序 6.high levels of assurance 高水平保证 7.compilation 编制 8.reliability 可靠性 9

发表于:2019-01-03 / 阅读(228) / 评论(0) 分类 财会英语

Jennifer: Hello and a very warm and friendly welcome to the first 6 Minute English of 2013. My name is Jennifer and with me in the studio for today's programme is Callum. Happy New Year! Callum: Hi Jen - happy New Year! Jennifer: Have you made any Ne

发表于:2019-01-07 / 阅读(282) / 评论(0) 分类 六分钟英语

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Ever been woken up by the sound of the refrigerator compressor kicking on? Well, such clumsy heat exchange units featuring long metal coils may be on their way out. Becaus

发表于:2019-01-08 / 阅读(195) / 评论(0) 分类 Scientific American(八)月

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Ants are known for working together, operating as a unit for the good of the colony. But not so fast, say researchers from the Universities of Leeds an

发表于:2019-01-08 / 阅读(241) / 评论(0) 分类 Scientific American(三)月

HEALTH REPORT-July 24, 2002: Hormone Replacement Therapy Study Halted By Nancy Steinbach This is the VOA Special English Health Report. American government researchers have halted a national women’s

发表于:2019-01-09 / 阅读(215) / 评论(0) 分类 健康与环境

HEALTH REPORT - Hormone Replacement Therapy Linked to Blood Clots By Cynthia Kirk Broadcast: Wednesday, October 13, 2004 This is Gwen Outen with the VOA Special English Health Report. American researc

发表于:2019-01-09 / 阅读(201) / 评论(0) 分类 健康与经济

DAVID GREENE, HOST: So Republicans in Congress are moving ahead with efforts to repeal the Affordable Care Act. They've said that's a priority. But there's a new poll suggesting that their constituents might not be as eager as they are to see the law

发表于:2019-01-16 / 阅读(167) / 评论(0) 分类 2017年NPR美国国家公共电台1月

1.Bending 弯曲 A: What kind of parts do you usually need to bend? B: Tubular parts or stampings. A:什么样的零件一般需要进行弯曲加工? B:管状零件或冲压件。 2.Cycle time 工作周期 A: What is the cycle time of the injection molding machine? B: Three

发表于:2019-01-21 / 阅读(163) / 评论(0) 分类 天天商务口语

发表于:2019-02-01 / 阅读(202) / 评论(0) 分类 财会英语

今天我们要学的词是random。 Random, 是随机、任意的意思。The firefighters have to undergo a random drug test once a year, 消防队员每年要接受一次是否服用毒品的抽查。The boxer refused to submit random blood tests

发表于:2019-02-03 / 阅读(244) / 评论(0) 分类 英语每日一词

今天我们要学的词是replacement。 Replacement, 意思是替代,替补。The coach chose Jimmy as the replacement for the injured quarterback, 教练选择Jimmy代替受伤的四分位。The basketball player just had a knee replacement surg

发表于:2019-02-06 / 阅读(161) / 评论(0) 分类 英语每日一词

今天我们要学的词是replacement。 Replacement, 意思是替代,替补。The coach chose Jimmy as the replacement for the injured quarterback, 教练选择Jimmy代替受伤的四分位。The basketball player just had a knee replacement surg

发表于:2019-02-06 / 阅读(147) / 评论(0) 分类 英语单词荟萃

29 Ways to Carry Out Random Acts of Kindness Every Day The time has come when we cannot just rely on others to make the world a better place each one of us has to do our bit. It is therefore time for people to be more and more aware about their Perso

发表于:2019-02-07 / 阅读(171) / 评论(0) 分类 阅读空间

It's a stat that gets bounced around as e-mail-forward wisdom: men think about sex every seven seconds. Even when the idea lacks this mythical specificity and grandiosity (that's 7,200 times a day!), the idea that men think about sex basically all th

发表于:2019-02-17 / 阅读(163) / 评论(0) 分类 阅读空间

natality 生育 fertility 生育率 fecundity 生育能力 birth rate, natality rate 出生率 births 出生人数 parity 胎次 premature birth 早产 life birth 活产 stillbirth 死产 birth peaks 出生高峰 mortality 死亡 mortality rate 死亡率

发表于:2019-02-18 / 阅读(191) / 评论(0) 分类 实用英语

left-skewed 左偏 negative-skewed 负偏 right-skewed 右偏 positive-skewed 正偏 contingency table 列联表 sampling distribution (of a statistic)(某个统计量的) 抽样分布point estimate 点估计值 point estimator 点估计式 unbiased

发表于:2019-02-18 / 阅读(177) / 评论(0) 分类 英语口译
学英语单词
-spirited
125-SPA
acculturating
adjustable bench level
agwei r.
alum slate
Amastigomycetes
ammad
AmoxicillinandClavulanatePotassiumGranules
apple-green
arthrectasis
ausgleiches
backpack nuke
ball-bearings
barend
baseload station
beam with constant cross-section
black plagues
Brahmana,brahmana
Buorkhaya, Guba
calfs
carpintero
coloss
combined lift and guidance
crimson tragopan
crown of tooth
crown-section of tunnel
darkled
death squads
demagogies
depalatalising
eddying current
Engelmann spruce
etaphen
fluoro-silicone rubber
full round
garbage housing
genus spirochaetas
Griffith theory
harshaw
hearing-ear dog
heterosexualize
idnexed sequential access
inverse regular representation
isomorphs
Jaws-harps
jigborer
Korsakova, Mys
koshlands
Kumluca
Kushanian Age
La Cabral
lead-filled rubber apron
master level item scheduling
mastotic
measure stopper arm
methodological room
motor module
nominal pressure grade
opera fantasia
packed lunches
partially persistent data structure
patio furniture
Petersen coil
phaedusa eumegetha
precipitation shield
Primula chumbiensis
public press
pushed around
Qaraites
rapid cycle digestion
redfaces
sacked cement
safety related component
Secretary of the Interior
Seltinskiy Rayon
separate edition
shi'ah
shift arrangement
shovel handle
side delivery conveyer
slack drying
spacesick
special creation theory
subjectmatters
Sulfoxyphenylpyrazolidine
survivor test
symmetrical inductive diaphragm
syncytiolysin
talc apatite
target track correction
technology-mediated
transverse folds of rectum
Trifolium repens
tumtums
ultramolecular
unretarded
valedictorian
variation of extremeness value method
velludo
wage and salary surveys
werfener beds