主成份分析, 主成分分析

CHAPTER SEVEN READING [00:07.78]A new newspaper [00:11.86]Soon after the term started,some Grade Eight students at May field School [00:20.32]wanted to publish a newspaper. They held a meeting. [00:26.80]Later,Arthur wrote this report about their mee

发表于:2018-12-01 / 阅读(433) / 评论(0) 分类 上海牛津初中英语八年级

Back at the explosives lab, examiners use a high-tech instrument called a Raman spectrometer, a device that determines if a package contains explosive material. With the Raman, what we are doing is th

发表于:2018-12-07 / 阅读(76) / 评论(0) 分类 揭秘联邦调查局

[00:00.00] Uint 7 [00:02.90]Lesson 25 [00:06.14]New word and expression [00:10.08]manners [00:11.52]pl.礼貌 [00:12.96]Zak [00:14.18]n.扎克 [00:15.41]Epps [00:16.69]n.艾普斯 [00:17.97]principal [00:19.45]n.校长 [00:20.92]seat [00:22.24]n.座位

发表于:2018-12-10 / 阅读(138) / 评论(0) 分类 广州初中4A

[00:00.00] Unit 3 Sports Day [00:04.28]A It's Sports Day soon Mr Li,the PE teacher,is talking to the students. [00:12.54]Listen,look and say. [00:16.90]It's Sports Day next week.Let's get ready. [00:21.58]What can you do? [00:24.63]I can throw a ball

发表于:2018-12-13 / 阅读(107) / 评论(0) 分类 深圳小学(深港版)第七册

Study Says Breath Analysis Can Help in Diagnosing Cancer Lung cancer claims an estimated one and a half million lives each year. But a research team at the Cleveland Clinic and University of Illinois is working to develop a new test that could make d

发表于:2018-12-16 / 阅读(82) / 评论(0) 分类 VOA标准英语2012年(一月)

Lesson58 Part Ⅰ Lesson 58 Part Ⅰ Warming-up Exercises Phonetics: Homonyms 1. a. principle b. principal 2. a. passed b. past 3. a. seize b. sees 4. a. for b. four 5. a. hear b. here 6. a. scene b.

发表于:2018-12-27 / 阅读(151) / 评论(0) 分类 英语听力入门 (全四册)

This is the second in a 2-part Business English Pod series on presenting a SWOT analysis. A SWOT analysis is a tool that helps companies understand their strengths and weaknesses, while keeping in mind the opportunities and threats they face. In this

发表于:2018-12-31 / 阅读(150) / 评论(0) 分类 商务英语演讲课

In this Business English Pod lesson, we start the first in a 2-part series on presenting a SWOT analysis. A SWOT analysis is a simple but powerful framework for analyzing your companys strengths and weaknesses these are internal to the company as wel

发表于:2018-12-31 / 阅读(169) / 评论(0) 分类 商务英语演讲课

Tina was going back to school for her third masters degree. She was a Special Education teacher, but she couldnt take her job anymore, so she had quit. The kids were out of control. There were too many of them in one classroom for her to manage effec

发表于:2018-12-31 / 阅读(100) / 评论(0) 分类 365个英语简短小故事

Grammar Girl here. Today were going to recall that the principal is indeed your pal, but well also see that a principal can be so much more. In this episode well talk about the various ways to use principlethats p-l-eand principalthats p-a-l. (These

发表于:2019-01-02 / 阅读(110) / 评论(0) 分类 英语语法 Grammar Girl

It was the first day of school. As the principal made his rounds, he heard a terriblecommotion coming from one of the classrooms. He rushed in and spotted one boy, taller than the others, who seemed to be making the most noise. He seized the lad, dra

发表于:2019-01-05 / 阅读(102) / 评论(0) 分类 趣味英语

[00:06.69]Unit 4 [00:08.27]What a big school! [00:11.22]Lesson 20 [00:13.58]Learn to Say [00:15.95]Good morning. [00:17.32]I'm Gao Jun. [00:19.40]He's our principal. [00:22.06]Hi, I'm Susan. [00:24.03]Nice to meet you. [00:25.96]Welcome to our school

发表于:2019-01-09 / 阅读(122) / 评论(0) 分类 快乐英语第六册

1. Congratulations for the new baby! 祝贺喜添丁! 2. Congratulations on the new addition to your family. 祝贺你们家喜添丁。 3. Congratulations on the birth of your child. 祝贺你们家喜添丁。 4. Congratulations on bringing this

发表于:2019-01-11 / 阅读(74) / 评论(0) 分类 英语口语

New York City is not only home to the nation's most diverse population, its public school system also has the largest variety of so-called specialized schools. These academies concentrate on everything from science and the performing arts to social

发表于:2019-01-13 / 阅读(93) / 评论(0) 分类 VOA标准英语2008年(六月)

News and analysis from an African American perspective Art Chimes | Washington, DC 19 February 2010 Related Links The Root February is African American History Month here in the United States, and so this week we feature a site that looks at news and

发表于:2019-01-13 / 阅读(104) / 评论(0) 分类 VOA标准英语2010年(二月)

RACHEL MARTIN, HOST: In North Carolina, more than 60,000 students are starting another week without school. Their districts are still taking stock of the damage caused by Hurricane Florence, and many of the students and teachers who evacuated are sti

发表于:2019-01-17 / 阅读(99) / 评论(0) 分类 2018年NPR美国国家公共电台9月

DNA analysis is a staple of crime scenesand crime shows, like HBO's The Night of or the old standby, CSI: We just need to get this to the DNA lab, confirm it's the victim's blood. And then, case closed. And it's not just for crime: DNA sequencing als

发表于:2019-01-20 / 阅读(129) / 评论(0) 分类 2016年Scientific American(九)月

I've cheated in school when I thought that I could get away with1 it. I'm not proud of it and I don't usually feel very good about myself afterward, but sometimes it's the only way possible to survive in a pressure cooker2. My parents are really set

发表于:2019-02-06 / 阅读(92) / 评论(0) 分类 阅读空间

1 He came to China to hold a talk about the commission for his new business. 他来中国是洽谈有关生意中的佣金问题。 2 What about the commission? 佣金是多少? 3 Usually a 1% commission is given to our agent. 一般情况下,我们

发表于:2019-02-09 / 阅读(96) / 评论(0) 分类 实用英语

What would you do if you were told that the masterpiece you bought for £100,000 was actually a fake? That's what happened to British businessman Martin Lang. He thought he was the proud owner of a painting by Marc Chagall, which he bought in 1992.

发表于:2019-03-04 / 阅读(99) / 评论(0) 分类 英语听力精选进阶版
学英语单词
advantage out
amillennialists
armings
automatic threahold
Aveleda
backward-action regulator
Botea
Buttisholz
Byusakan
cairngormstone
chemical economics
cheverel
choice menus
common object model
component nuclear precession magnetometer
congenital amaurosis
crystal controlled
current source for measurement
demandings
diaclases
digital error
disequal
ejector effect
electronic display
eurythmicss
feller-delimber-bucker-buncher
Fer-in-sol
filament switch
Florid-F
heldentenors
high pressure fuel pump
hoky-poky
IADH
Ibadists
initial sensibility
Joeuf
kiddie stroll
leiariuss
Magazine Mountain
malarkey, malarky
mercator cylindrical projection
merchandise valuation
Montechiaro d'Asti
Mudian
mugilogobius abei
multispectral photographic information
musculus protractor pinnae dorsalis
negro
nickel steel
number of repeated impact to breaking
oriental-style
panduriform
Paxton, Joseph
Peraltilla
Polish language
pre-Soviet
pressure drive
pseudo-random process
Puccinellia leiolepis
quality of freight transportation
re import
refined degree
regretably
reserve source of cash
Rundstedt, Karl Rudolf Gerd von
saligine
sandpaintings
Saussurea
screwstock
sdr standard
semiforced
serialisation
serum antitetanicum siccum
silicon steel sheet
sliding-filament model
solvent-recovery system
souster
soviet-eras
speed up gears
spheroides
sportboats
sprocket chain
stenogobius genivittatus
stereoblock
stony uterine mass
storage content
surrebutter
telex booth
temporomalar nerve
terminal equipment types
test of mongolian and tibetan language
thermo-couple pyrometer
three-high bloomer
throat paint
to the best of one's belief
tree farmer
Trombe walls
Tunis.
underfiring gas
visiting nurses
vt (voltage transformer)
wrist roll