【数学】 求根,开方

extract a root的用法和样例:

例句

  1. A wise doctor will diagnose before writing a prescription.明智的大夫在开方之前先诊断。
  2. The roots are extracted in the root sections by method of bisection or secant.采用二分区间求根法或弦截求根法确定故障点。

[00:42.52]Listen to Xiaoyan and her friend Anne talking about the party. [01:46.90]Extract 2 Listen and write what you hear. [02:30.00]Extract 3 Answer the questions based on what you know about the party. [03:27.77]Extract 4 Listen to a description

发表于:2018-12-04 / 阅读(161) / 评论(0) 分类 电视大学开放英语

Agriculture Report - Getting to the Root of How to Water Trees This is the VOA Special English Agriculture Report. Some trees can survive a long time without water. Think of trees that grow in the desert. But other trees may need more moisture than t

发表于:2018-12-07 / 阅读(259) / 评论(0) 分类 2011年VOA慢速英语(八)月

[00:03.06]Extract 1 [00:07.50]Listen to each sentence twice [00:09.85]and use the information it contains to answer the question. [02:38.01]Extract 2 [02:45.68]Listen to the following dialogue twice and answer the questions

发表于:2018-12-11 / 阅读(181) / 评论(0) 分类 电视大学开放英语

[00:38.76]Extract 1 [00:40.95]Answer each question about Tom using the prompts in your book. [00:46.78]1.What did he do last night? He met Tim for dinner. [00:58.71]2.When did he leave school? He left school in 1992. [01:14.75]3.How was his last holi

发表于:2018-12-11 / 阅读(257) / 评论(0) 分类 电视大学开放英语

[00:01.61]Extract 1 [00:04.04]Answer the questions. [00:06.51]1.Where do you get the car washed? I wash it myself. [00:19.65]2.Where does John get his car repaired? He repairs it himself. [00:34.95]3.Where doesn Mark get his hair cut? He cuts it hims

发表于:2018-12-11 / 阅读(283) / 评论(0) 分类 电视大学开放英语

THIS IS AMERICA - How Root Beer Changed the Business World BARBARA KLEIN: Welcome to THIS IS AMERICA in VOA Special English. I'm Barbara Klein. CHRISTOPHER CRUISE: And I'm Christopher Cruise. This week on our program, we look at the history of root b

发表于:2018-12-16 / 阅读(228) / 评论(0) 分类 2011年VOA慢速英语(八)月

Yi-jun: So people can go and root for their old school team? Taylor: Yep. And relive those good old high school days. Yi-jun: You don't sound too excited about going to your reunion. Taylor: I'm not. I get a stomachache just thinking about it. Yi-jun

发表于:2018-12-25 / 阅读(231) / 评论(0) 分类 Eztalk美语会话

[00:03.16]Extract 1 Answer the questions using the prompts in your book. [01:19.64]Extract 2 Answer usning the cues in your book. [01:48.22]Extract 3 Answer the following questions. [02:56.00]Extract 4 Susan leaves a message for Tracey Smith. [03:43.

发表于:2018-12-29 / 阅读(222) / 评论(0) 分类 电视大学开放英语

[00:02.32]Extract 1 [00:05.57]David talks on the phone to Max in Paris. [03:25.12]Extract 2 Form questions using the prompts in your book and in this extract. [04:29.88]Extract 3 The conference in Paris. [05:40.62]Extract 4 Answer the questions follo

发表于:2018-12-29 / 阅读(327) / 评论(0) 分类 电视大学开放英语

[00:43.02]Extract 1 [00:45.94]Make questions using the prompts in your book. [01:49.62]Extract 2 [01:52.96]Listen to the questions and answer them for yourself using short answers. [02:00.61]Use the pause button. [03:56.06]Extract 3 Xiaoyan talks to

发表于:2018-12-29 / 阅读(258) / 评论(0) 分类 电视大学开放英语

[00:02.40]Extaract 1 Xiaoyan and David meet at work. [01:12.95]Extract 2 Give advice using the cues in your book. [02:40.66]Extract 3 Xiaoyan phones a guesthouse to make a reservation. [03:50.20]Extract 4 Answer the questions as if you are Paul. [04:

发表于:2018-12-29 / 阅读(245) / 评论(0) 分类 电视大学开放英语

[00:02.66]Extract 1 Answer the questions using the cues in your book. [01:19.83]Extract 2 Answer the questions using the information in your book. [02:49.30]Extract 3 Listen to part of Polly's job interview. [04:12.44]Extract 4 Respond to the questio

发表于:2018-12-29 / 阅读(264) / 评论(0) 分类 电视大学开放英语

[00:03.16]Extract 1 Answer the questions using the prompts in your book. [01:11.67]Extract 2 Tim is on the telephone to Mary. [02:17.36]Extract 3 Answer the questions using the prompts in your book. [03:24.85]Extract 4 Listen and respond to the state

发表于:2018-12-29 / 阅读(236) / 评论(0) 分类 电视大学开放英语

By Jessica Berman Washington 23 October 2007 Researchers say that an extract made from broccoli sprouts may prevent skin cancer when applied directly to the skin. VOA's Jessica Berman reports scientists say broccoli contains a chemical that stimulate

发表于:2019-01-03 / 阅读(214) / 评论(0) 分类 2007年VOA常速英语(十月)

'Cash Mob' Phenomenon Supports Local Business What do you get when you mix a store's need for more business with enthusiastic local consumers? A cash mob. Organized through social media, the phenomenon is based on the concept of a flash mob, where la

发表于:2019-01-11 / 阅读(218) / 评论(0) 分类 VOA标准英语2013年(五月)

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(236) / 评论(0) 分类 VOA标准英语2010年(二月)

Money is the root of all evil. Do you think this is true? How can money lead people to do bad things? Do you think money can do good things? If so, give examples! (Note: Although many people repeat this quote, the original saying was Love of money is

发表于:2019-02-02 / 阅读(272) / 评论(0) 分类 english quotes 英文谚语

今天我们要学的词是 root cause。Root cause 根本原因。世界经济论坛说,The lack of competitiveness in Europe is the root cause of financial instability and rising unemployment numbers in the region. 缺乏竞争力是欧洲经济不

发表于:2019-02-03 / 阅读(218) / 评论(0) 分类 英语单词荟萃

今天我们要学的词是root。 Root, 做为动词,是为某人打气,捧场的意思。The whole town is rooting for the local high school football team, 整个小镇都为当地高中橄榄球校队加油。I always root for the underdog, 我总

发表于:2019-02-05 / 阅读(199) / 评论(0) 分类 英语每日一词

今天我们要学的词是root。 Root, 做为动词,是为某人打气,捧场的意思。The whole town is rooting for the local high school football team, 整个小镇都为当地高中橄榄球校队加油。I always root for the underdog, 我总

发表于:2019-02-06 / 阅读(192) / 评论(0) 分类 英语单词荟萃
学英语单词
absolute x-ray intensity
accentuated sound
action of trespass
airattache
airmobile
averaging light meter
bilinogen
boris karloffs
brachystomatous
breeding improved varieties
bunothorax takasagoensis
carburized structure
chalk commander
Chauchina
cheers
coal-forming material
content addressing
cowtail
crawk
dead man's handle
disfix
drive the big bus
electron ballistics
enamel color
encephalic
epanaphora
escalating rate
exasperated by
Fatsa
fese
fluorescer
genus paeonias
go into Etons
Great North East Chan.
ground grid
in recent years
integral linear polarization
intracervical insemination
iseo, lake
it doesn't grow on trees
jean laffites
job step
judicial circuits
kawazugake
Kidepo Valley National Park
komensky
Litsea garrettii
long period comet
lumpingly
mechanical type lever
melzer
mestranols
methyltrimethylol-methane
microchunking
milchig
misapprehension
Narodniks
nosebleeders
nover
orthofelsite
Oxybulynin
palazzi
piece de resistances
polygenetic chain
pooled buffer
post-competition
primary record
protective head-cover
purchasing station
purdoniums
pyro powder
radices molles ganglii ciliaris
reduced diameter
refundable amount
reinjected
resubjecting
right of disposition
rod-knight
roomliness
saynd
scale accuracy
scale cutting
self-screenings
shell frame
short take off and landing aircraft
Sinta
slip-covered
sodium laurate
southernness
Strachan-Scott(syndrome)
stratiformis
subdictionaries
support frame
tabito
Tenyposide
toplift attachment
transport entity
trizygold development
typical filtration efficiency
vibration-control device
W.E.C.
yelow gold