小样本抽样理论

In the square outside the British Library in London is a sculpture of Sir Isaac Newton - The first man who asked why apples seem always to fall towards the centre of the earth. Maybe they chose it for the spot because it shows a great scientist at wo

发表于:2018-12-07 / 阅读(55) / 评论(0) 分类 英文杂志-Magazine

Plants can choose where their seeds end up. Some float on the winds, others on the water. Many seeds hit the ride on or inside animals. And the farther seeds get from their parents and any predators of the disease the parent might have, the better ch

发表于:2018-12-24 / 阅读(40) / 评论(0) 分类 Scientific American(六)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(51) / 评论(0) 分类 天天商务口语

发表于:2019-02-01 / 阅读(69) / 评论(0) 分类 财会英语

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(48) / 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(58) / 评论(0) 分类 实用英语
学英语单词
Ad Hoc Expert Group on Fuller Utilization of Industrial Capacity
Agricultural Trade Development and Assistance Act
antimilitarism
approximativeness
ascarite
atomic evolution
back shell
Beecher, Henry Ward
biointermediate element
blade frequency pressure
blender grinder
block type run-of-river power station
bloomville
boae
board of foreign trade
buffer block deletion
castdown
combined line and recording call
come to nothing
container handling appliance
core flooding train
cyclopy
Czemierniki
donoughmores
easels
eldest hands
electrostatic agglomeration in space
enlightenment-era
exethmoid
ferritin labeling
field block (anesthesia)
floating dregs
fluoro-nickel-complex
flus gas analysis
frasers
fruit juice
glycosylates
governing gear
grip strength
hidden solonchak
high-rent
hydraulic turbine
illumination climate
jiff
key sending
kksf
knies
limitation of prosecution
man-pussy
mananosay
morainic clay
mugil
neutron-capture radiation
nighthorse
nonanalysts
optic-fiber communication
Oriental cure
osiatynskis
outhale
overall length of under carriage
paracheilognathus himantegus
paravector
pentagrid of converter
piscinas
promotion video
pulling-back
quasi homogeneous alignment
range depletion
regulating enzyme
resultant lift
Rhodanthe manglesii
rogalian
rooflight
safety squeezes
secondigravida
semicircular protractor
sexual hygiene
Shimpi
shouzhu
shy about
sikonye
single-phase synchronous machine
sound shop
standard common stock
steady flow nozzle head
Steganopod
stripping lacquer
surviving
synthetic memory
terrestrial poles
thermal power rating
to fin
total-head pressure
Trep.
trigonal pyramid
trotman
Tufftriding
useful-thread
wafer-level packaging
weather signal
weight density