直接抽样方法

1.Fuel your body with an amazing breakfast用美味的早餐给你身体充能 Have you ever noticed how some mornings you feel great and ready to tackle the world, and other days you have a mid-day slump? Having a healthy breakfast can help keep you

发表于:2018-12-12 / 阅读(42) / 评论(0) 分类 实用英语

Transcript This is Scientific American's 60-Second Science, I am Cynthia Graber.This will just take a minute. Physicists at the Brookhaven National Laboratory have been able to send information ahead of particle beams racing at nearly the speed of li

发表于:2018-12-24 / 阅读(100) / 评论(0) 分类 Scientific American(二)月

每期节目一话题,让英语磨练耳朵的同时学到更多有益的小知识,丰富知识的同时受益于生活。 Time-management tips 时间管理技巧 Work around procrastination. 克服拖延症。 Try Francesco Cirillo's Pomodoro Te

发表于:2018-12-27 / 阅读(60) / 评论(0) 分类 英语听力广播—Listening

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(126) / 评论(0) 分类 商务英语必备1000字

If you are like many language students, you might have a problem with procrastination. Perhaps you are slow to do homework or study for a test. Maybe you do not like to study or you become distracted while studying. Whatever the case may be, learning

发表于:2019-01-02 / 阅读(400) / 评论(0) 分类 2017年VOA慢速英语(六)月

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(115) / 评论(0) 分类 财会英语

2. agri 你已认识field是“田地”, 你是否也知agri的意义? 在有关农田的词汇里, field竟都被agri所代替。 agri=field 田地,农田(agri也作agro,agr) 1. agrology agr

发表于:2019-01-06 / 阅读(84) / 评论(0) 分类 英文语法词汇

Vacationing on the island of Oahu, we were waiting in our tour bus for some stragglers to show up. A man, obviously not with our group, approached the bus and was about to board. How would our driver

发表于:2019-01-11 / 阅读(157) / 评论(0) 分类 英汉幽默故事选读

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(66) / 评论(0) 分类 天天商务口语

Science and Technology The Neolithic Boom-time machine 科技 新石器时代 时间机器解密:新石器时代的繁荣期 A new technique lets archaeologists reconstruct the past in greater detail 考古新技术让考古学家们能更加详尽地重

发表于:2019-01-26 / 阅读(60) / 评论(0) 分类 经济学人科技系列

By Carol Pearson Washington 08 January 2008 New technology makes surgery safer, shortens recovery time and leaves no scars. Both physicians and patients are pleased with the results. VOA's Carol Pearson has more. Maria Viruet recently had her gallbla

发表于:2019-01-31 / 阅读(109) / 评论(0) 分类 VOA标准英语2008年(一月)

发表于:2019-02-01 / 阅读(95) / 评论(0) 分类 财会英语

Vacationing on the island of Oahu, we were waiting in our tour bus for some stragglers to show up. A man, obviously not with our group, approached the bus and was about to board. How would our driver handle the situation, we wondered. Straight-faced,

发表于:2019-02-03 / 阅读(95) / 评论(0) 分类 趣味英语

British MPs have voted in favour of the creation of babies with DNA from two women and one man, in an historic move. 英国国会议员投票通过一项具有历史性意义的决议,支持用两母一父的DNA培育婴儿。 The UK is now set to

发表于:2019-02-09 / 阅读(57) / 评论(0) 分类 阅读空间

The Federal Bureau of Investigation's secret method for unlocking the iPhone 5c used by one of the San Bernardino shooters will not work on newer models, FBI Director James Comey said. 美国联邦调查局局长詹姆斯科米近日表示,FBI用于破

发表于:2019-02-15 / 阅读(52) / 评论(0) 分类 英语新闻

Reproductive technology 生殖技术 Mum, Dad and Mitomum 妈妈,爸爸与代孕妈妈 Britain may allow babies with three biological parents 英有望允许新生儿有三个亲身父母 ASSISTED reproduction is one of those rare areas in which Br

发表于:2019-02-16 / 阅读(89) / 评论(0) 分类 经济学人科技系列

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(79) / 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(89) / 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(87) / 评论(0) 分类 英语口译

知识点讲解: 1、中文意思一样 insist persist 2、两个词长得像 special specialty 3、长得像+中文意思一样 technique technology ① Technique 方法、技巧 Hes a great basketball player. He has flawless technique. 他是位很

发表于:2019-02-21 / 阅读(77) / 评论(0) 分类 每天三分钟学英语
学英语单词
-orium
3-hydroxypropyl methacrylate
a Directioner
acrobates pygmaeus
anytime soon
atoka
audit operations branch
Baja Midnight
bells and whistles
benzimidazoyl
birds-on-the-wing
bn object bn
botan-
break bulk container ship
bromid
capsizing moment windlass
cash forecast
chugach mts.
coaxial cable area
coded pulse siganl
conditioned immunity
confraternity
cumulative screen analysis
cwm-glacier
cymo-raceme
diaphragm coupling
double action oil hydraulic press
double layer glass
echo altimeter
emanatory
emergency stop indicator
family Tapiridae
ferric sesquioxide
ferrocene
find a lodge
flying spit
foot's oil
frequency group
gefe
gnophomyia orientalis
grating for stopping floating wood
grimr
gunnery data
haringay
Hycholine
hydrostatic compression
icariresinol
injection block
inverse gsm mapping
junctional tachycardia
Kalīso
Klebsielleae-Enterobacter-Serratia
knobhead
machine barking
Mahonia nervosa
master fault
measure of time
member of tribunal
motor-coach
Nanticokes
needler
ocrea
ousters
outsnores
payane
peach insect
pentafluorization
pentaprism
Pinelopi
Polygala bomiensis
power loss of pump
prenuptial
prescapular fossae
price has downslided
probability law
projectest
registered health information technician
regulating action
ribbonfish
riffle area
s-head
scrutators
semiconducting ceramics
septingentenary
seymour
shoe horn
skypod
snoring rail
stog
submergenic horizon
superior parotid artery
swills
timelines
toll enquiry position
tribromochlorosilane
trustee in hankruptcy
underwater holography
unsaturated color
van-foss
wearable computing
Yealmpton
yotta-hertz