射频场强度

WHITE HOUSE President Donald Trumps administration wants to shut down U.S. government radio stations that announce official time, a service in operation since World War II. WWV and WWVB in the state of Colorado and WWVH on the island of Kauai in the

发表于:2018-12-01 / 阅读(92) / 评论(0) 分类 VOA标准英语2018年(九月)

Hank Williams' 1950 Radio Performances Released Its been more than 60 years since Country music star Hank Williams died. But his songs -- including Cold Cold Heart, Hey Good Lookin and Im So Lonesome I Could Cry -- are still influencing songwriters i

发表于:2018-12-16 / 阅读(58) / 评论(0) 分类 VOA标准英语2014年(六月)

Scrap-Metal Separation May Become Cheaper 新技术降低废金属分离成本 According to the Environmental Protection Agency, the United States throws 14.8 million tons of scrap metal into landfills every year. One of the main reasons is the diffi

发表于:2018-12-16 / 阅读(44) / 评论(0) 分类 VOA标准英语2015年(二月)

If you splashed down in the Atlantic, you'd flounder on which way to swim. But a hatchling loggerhead turtle would know just where to paddleby reading the Earth's magnetic field. Scientists knew turtles can pinpoint latitude this way, because the fie

发表于:2018-12-24 / 阅读(70) / 评论(0) 分类 Scientific American(二)月

Iknewaguywhoplayedhisradioonlyinthemorning. Whensomeoneaskedhimwhy , hereplied,ThisisanAMradio. Notes: 1.Iknewaguywhoplayedhisradioonlyinthemorning. 我认识一个人,他只在早上收听广播。 2.Whensomeoneaskedhimwhy , hereplied,Thisisan

发表于:2018-12-26 / 阅读(74) / 评论(0) 分类 英语笑话(MP3+文本)

Lesson 156 Part Ⅰ Warming-up Exercises Spot Dictation: The Temperature Check Last winter we had kind of a, uh, cold winter and I was home in bed _____ one night and listening _____ my radio. And, uh

发表于:2018-12-27 / 阅读(67) / 评论(0) 分类 英语听力入门 (全四册)

Tornados are one of the most frightening weather phenomena on our planet. Not only are they unique in how they form, but also in how they are measured . A tornados intensity is defined by the Enhanced Fujita Scale. On this scale, the intensity of the

发表于:2018-12-28 / 阅读(80) / 评论(0) 分类 轻松英文阅读

On January 11, Norway became the first country to begin turning off signals from its FM radio network. The Norwegian stations will instead use only digital audio broadcasting, called DAB. FM, or frequency modulation, radio stations have been in opera

发表于:2019-01-02 / 阅读(133) / 评论(0) 分类 2017年VOA慢速英语(一)月

Three radio stations in the United States mainly broadcast one thing: the official time. The three are radio stations WWV and WWVB, in the state of Colorado, and WWVH, on the island of Kauai in Hawaii. They send out signals that are used by millions

发表于:2019-01-03 / 阅读(82) / 评论(0) 分类 2018年VOA慢速英语(九)月

Dong Lu Rm 549, Office Tower 2, Xingye Center No.18, Jian Guo Men Nei Ave. Phone: 13910212358 Beijing China (100005) Email: liudong@263.net -------------------------------------------------------------------------------------------------------- WORK

发表于:2019-01-06 / 阅读(99) / 评论(0) 分类 实用英语

[00:00.00]Unit 2 [00:04.34]What are you doing? [00:06.50]1.Listen,point and say [00:16.27]What are you doing? I'm watching TV. [00:27.35]What are you doing?I'm listening to the radio. [00:37.36]What are you doing? I'm talking to a friend. [00:50.83]W

发表于:2019-01-09 / 阅读(110) / 评论(0) 分类 新标准小学英语学生用书3册(三年级起点)

AS IT IS 2015-03-25 Scrap Metal Separation May Become Less Costly 废金属分离技术成本可能会降低 Recycling, or re-using, metals is much less costly than making them from raw materials in the Earth, called ore. But when old cars, household

发表于:2019-01-12 / 阅读(49) / 评论(0) 分类 2015年VOA慢速英语(三)月

Robot Can Help With Farm Work 可以帮助农民干活的机器人 In the American state of Idaho, a robot moves between lines of fruit trees and grapevines. It is doing farm work. Called IdaBot, this robot is a prototype, or model. An engineering te

发表于:2019-01-12 / 阅读(390) / 评论(0) 分类 2016年VOA慢速英语(十一)月

科学家研究地球磁场 WASHINGTON Most of us hardly ever think about the Earth's magnetic field. We might be aware that it helps guide birds as they migrate and ensures that our compasses point north, but not realize that it is one of the crucia

发表于:2019-01-14 / 阅读(65) / 评论(0) 分类 VOA标准英语2015年(十二月)

Scientists Take on Earths Magnetic Field 马里兰大学实验室复刻地球磁场 WASHINGTON Most of us hardly ever think about the Earth's magnetic field. We might be aware that it helps guide birds as they migrate and ensures that our compasses p

发表于:2019-01-14 / 阅读(61) / 评论(0) 分类 VOA标准英语2015年(七月)

Voice 1 Hello. Im Rachel Hobson. Voice 2 And Im Mike Procter. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Welcome to our li

发表于:2019-01-19 / 阅读(68) / 评论(0) 分类 环球英语 Spotlight

As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get increasingly close to the Earth's surface. As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get

发表于:2019-01-22 / 阅读(67) / 评论(0) 分类 自然百科2011年

It's clear from the fact that the Martian crust is strongly magnetized, that there must have been a magnetic field on Mars in the past, that the only way we know to magnetize rocks is for them to form in the presence of magnetic field. Why did Mars l

发表于:2019-01-22 / 阅读(59) / 评论(0) 分类 自然百科2011年

十个方法帮你找到工作 1. Read industry magazines. You'll keep up on new developments in your field, and many contain job listings as well. 1.读读行业杂志。你会跟上业内最新的发展,同时也能获取一些可能的工作列表

发表于:2019-02-06 / 阅读(48) / 评论(0) 分类 实用英语

Deciding where to place a Wi-Fi router at home to minimise signal blackspots is a fine art. But a physicist has attempted to tackle the problem by mathematically working out the optimum position for a router. He studied how walls and reflections affe

发表于:2019-02-08 / 阅读(89) / 评论(0) 分类 英语新闻
学英语单词
Ammeran
anticancinogen
Aricanduva
Aster tataricus L. f.
atmospheric envelope
attention economy
bapus
benzylomorphine hydrochloride
Bojeong
carnot cycles
chassis and cab kerb mass
cielab colour space
cold cathode ionization gauge
concept formation in primate
copoietic
crude stabilization
demand-assigned multiaccess
diversion model
DNLL
earball
electric power-supply circuit
evangelicals
exception character handling
flat side
flexible shunt
floating normalized control
Fludilat
freso
giacoletto equivalent network
giffin
gravity receptors
harav
inductotherm
irtish rivers
jet-lagged
junk price
kvinna
laddus
leptostraca
light sensitive sample
load transducer
LWG
machine-oriented symbolic instruction
main air intake
management action
married couple
momentum-transfer method
monadologies
mono block
nannostomuss
negative orientation
nehanda
New Austrian Tunneling Method
news brief
nivaldo
nominal strian
non member
packaging adhesive
parameter well,stratigraphic well
pea shooter
permanent bird
postoperative hernia
psychicist
ptafr
pulp amputation
quarantine berth
quarantine hospital
Rava-Rus'ka
reclaimed rubber tyre
relaxed-strain
rise above
Saaletalsperre
schwartzbach
self-appraisals
semi-structure
siemenss
single iron pulley block
software licensing
statement of change in financial position
statistical project
Sturnidae
superior cardiac nerve
swagler
synopsised
system loading
testacy
thessalus
thickness monitor
tipping trough
Turning-place
unergetic
unit extension
unsupervised classification
upper air limit
user assigned name
vessel in ballast
weightlessness (zero gravity)
xinomavro
Y-track
yachtmanship
Zambians
Zoubekite