扫描信号发生器;扫频仪

It starts with a blip, a beep, a noise, a pattern, a signal. It could be anything - ink on paper, machine data, or even the words flowing through your minds right now. Signal generators play an important role in testing devices we use every day. The

发表于:2018-12-11 / 阅读(162) / 评论(0) 分类 英语解说豆知识2011年

UNIT 17 Housework\n [au:]第十七单元 家务\n [00:04.30]Dialogue\n [au:]对话\n [00:06.01]1 Look and listen. Then read and act out the dialogue.\n [au:]1 看一看,听一听,读一读然后表演对话。\n [00:13.60](Billy, the alien, is wi

发表于:2018-12-13 / 阅读(253) / 评论(0) 分类 广州版金太阳小学英语四年级上

Unit 8 Could you please clean your room? [00:08.05]Section A [00:09.63]Language Goals: [00:11.64]Make polite requests [00:14.42]Ask for permission [00:16.91]Peter,could you please take out the trash? [00:20.85]Sure,Mom. [00:23.04]1a PAIRWORK [00:26.6

发表于:2018-12-13 / 阅读(320) / 评论(0) 分类 初中英语山东版七年级下

D type Channel Bank A D type channel bank is channel termination equipment used for combining (multiplexing) individual analog channel signals on a time division basis. D type channel banks provide in

发表于:2019-01-03 / 阅读(200) / 评论(0) 分类 电信英语

By Steve Herman New Delhi 04 June 2008 More than 10,000 people have been arrested in Bangladesh, the past week, as part of an ongoing crackdown by the government. Political activists are among those being jailed in what officials call a sweeping ant

发表于:2019-01-11 / 阅读(148) / 评论(0) 分类 VOA标准英语2008年(六月)

Bladeless Wind Generator Safe for Birds Wind turbines are tall structures with large blades used to produce electricity. They are useful sources of low-cost, renewable energy. But they can also be deadly to birds and bats. The turbines large blades t

发表于:2019-01-12 / 阅读(185) / 评论(0) 分类 2015年VOA慢速英语(七)月

今天我们再学几个美国政坛常用的习惯用语。第一个是:landslide。 Landslide,原来的意思是山崩、塌方,是由于大雨或者地震而导致大量的泥土石块从高处崩塌下来。这样由泥石汇成的巨流有排

发表于:2019-01-19 / 阅读(206) / 评论(0) 分类 美国习惯用语

歌词如下: The broom,the broom, What do we with it? What do we with it? We sweep the floor, We sweep the floor, Each morning, Each morning

发表于:2019-01-28 / 阅读(154) / 评论(0) 分类 英语儿歌274首

BEIJING, March 13 (Xinhua) -- Both China and U.S. signaled that the world's two biggest economies should explore a road of new-type relations. The new type of relations between major powers should be based on mutual respect, cooperation and seeking w

发表于:2019-02-03 / 阅读(150) / 评论(0) 分类 英语新闻

BEIJING, Sept. 26 (Xinhuanet) -- Weather forecasts showed that Thursday or Friday might be suitable for launching the Tiangong-1 spacecraft, experts said. The unmanned spacecraft, part of China's first spacecraft rendezvous and docking mission, was s

发表于:2019-02-03 / 阅读(207) / 评论(0) 分类 英语新闻

今天我们要学的词是sweep。 Sweep, 大家都知道,是扫地的意思,不过,sweep还有另外一个意思,指赢得比赛的全部胜利。 Jamaica became the first nation in Olympic history to sweep the gold, silver and bronze medal

发表于:2019-02-05 / 阅读(105) / 评论(0) 分类 英语单词荟萃

By Cindy Saine Washington 13 February 2008 Senator Barack Obama has scored three decisive primary victories, Tuesday over Senator Hillary Clinton, winning big in Maryland, Virginia and Washington, DC in the race for the Democratic presidential nomina

发表于:2019-02-05 / 阅读(107) / 评论(0) 分类 VOA常速英语2008年(二月)

By Jim Malone Washington 20 February 2008 In the U.S. presidential race, Barack Obama has now won10 straight contests in his battle with Hillary Clinton for the Democratic Party's presidential nomination. Meanwhile, John McCain moved another step clo

发表于:2019-02-05 / 阅读(120) / 评论(0) 分类 VOA常速英语2008年(二月)

今天我们要学的词是sweep。 Sweep, 大家都知道,是扫地的意思,不过,sweep还有另外一个意思,指赢得比赛的全部胜利。 Jamaica became the first nation in Olympic history to sweep the gold, silver and bronze medal

发表于:2019-02-05 / 阅读(134) / 评论(0) 分类 英语每日一词

CHANGZHOU, Jiangsu Province, Sept. 17 (Xinhua) -- Chinese badminton team were on verge of another clean sweep after last month's world championships as they had secured one-two in three of the five events on Saturday. Shuttlers from other teams could

发表于:2019-02-05 / 阅读(158) / 评论(0) 分类 英语新闻

今天我们要学的词是signal。 Signal, 作为动词,意思是显示。 The number of Americans filing for unemployment benefits for the first time fell to the lowest level in nearly six months, signaling a slight improvement in the job market

发表于:2019-02-05 / 阅读(141) / 评论(0) 分类 英语单词荟萃

BEIJING, Nov. 20 (Xinhua) -- A cold front will sweep most parts of China over the next three days, bringing strong winds and temperature drops, the National Meteorological Center forecast Tuesday. From Wednesday to Friday, temperatures will drop from

发表于:2019-02-08 / 阅读(152) / 评论(0) 分类 英语新闻

Strong cold front to sweep China BEIJING, Oct. 14 (Xinhua) -- A strong cold front coming from northwest China's Xinjiang Uygur Autonomous Region will drop temperatures in most parts of China in the next three days, the country's national observatory

发表于:2019-02-08 / 阅读(135) / 评论(0) 分类 英语新闻

Cold snap to sweep through China BEIJING, Oct. 28 (Xinhua) -- China's central and eastern regions will experience temperature drops in coming days, while the southern parts will receive moderate to heavy rain, the national meteorological watchdog for

发表于:2019-02-13 / 阅读(144) / 评论(0) 分类 英语新闻

BEIJING, Feb. 15 (Xinhua) -- A strong cold front is expected to sweep most of China, dragging down temperatures by up to 14 degrees Celsius in some areas. The cold front will lower temperatures by 6 to 10 degrees Celsius in most parts of China during

发表于:2019-02-18 / 阅读(135) / 评论(0) 分类 英语新闻
学英语单词
a bean
abdominal mass
actual gross national products
after light
algebraic specification language
amega
arthronalgia
article assembly
attritus (durain)
autopilot control
Barosma crenulata
basilicon Ointment
Bernoulle polynomial
Brunswick B.
cat's eye gem
centrical mesophyll
chassis number
chromatron
cobalt(ii) propionate
colt-evil
configuration service program
crossed edged bit
Cyrilla racemiflora
domestic seawater technology
enter the umbra
fagazine
flesh-eater
Fliess'treatment
gmelch
go beyond the commission
ground water table
headguards
high pressure phase
horna
hundred-and-fortieth
hydrodistension
incomparable worth
isoperimetric
joblike
least-square estimation
leg curls
line-picking duplicators
lithium propoxide
logoclonias
loriscae
major orders
malleate trophus
Mancheng
matter to you
maxail
median paralysis
middle chain triglyceride
monolepta nantouensis
myconucleo-albumin
nonadaptive quantization
numeral flag
ogee
outer orbital mechanism
outyelled
phenyl-xanthogenic acid
Pholidota articulata
photograph transmission
pizzicati
podsolisation
poetic tradition
potting compost
prawn toast
proferment
prorated section
psychoacoustic model
raisner
recombination cross section
Rent-a-Train
sauce espagnoles
sciades fasciatus taiwanensis
sequential probability ratio test
shpeals
shutoff gate
silverskin
socialist criminal law
spherocephalus
step-back method of welding
stimulated elastic restoration
strategic interests
tall hat
TEPDU
thelotrema formosanum
theological systems
there's no mistaking
touch sensitive
trisonic tunnel
trust chain
tumor of vulva
undiscernably
unexpended
uppings
Urodinychidae
utility line
vanadium(iv) chloride
virochey (voeune sai)
vulnus
vulsellum forceps