毫米波频率

This is Scientific America's 60 second science, I'm Sentay Graber, this will just take a minute. Magnifying glass, telescope, tiny tiny tape measure, these are the weapons with which researchers are fading it out to find the world's smallest frog.One

发表于:2018-12-24 / 阅读(59) / 评论(0) 分类 Scientific American(一)月

Focal Length - Distance from the exact center of the dish to the center of the feed. Focal Point - The physical point in space toward which the satellite reflector dish directs the received signal so

发表于:2019-01-03 / 阅读(68) / 评论(0) 分类 电信英语

AS IT IS 2016-10-05 Nobel in Chemistry Goes to Makers of Worlds Smallest Machines 2016诺贝尔化学奖:世界上最小的机器 Three scientists have won the Nobel Prize in Chemistry for their work in developing tiny machines. The three men are Jea

发表于:2019-01-12 / 阅读(64) / 评论(0) 分类 2016年VOA慢速英语(十)月

Chinese scientists have announced a gravitational wave research plan they're dubbing Taiji. The Chinese Academy of Sciences says their research plans will be finalized later this year. Academy member Wu Yueliang says their research will focus on low

发表于:2019-02-02 / 阅读(62) / 评论(0) 分类 英语新闻

Chinese scientists have announced a gravitational wave research plan they're dubbing Taiji. The Chinese Academy of Sciences says their research plans will be finalized later this year. Academy member Wu Yueliang says their research will focus on low

发表于:2019-02-21 / 阅读(59) / 评论(0) 分类 2016CRI中国国际广播电台

Those waves hitting the sand actually begin far out at sea. And it doesnt take much to get them going. A little wind will do the trick. First the wind blows over the surface of the water, generating the little ripples you can see just by blowing acro

发表于:2019-02-23 / 阅读(46) / 评论(0) 分类 英语时差8,16
学英语单词
aggregate feeder
aimeth
Alexander's gold
alternative chill and fever
Amangqika
anatexites
apaiang atoll
apo-fenchene
armfield
auxiliary needle valve
B dose
basic range
Bearpaw Mountains
biceps
BIFN
black sturgeon r.
caelatus
carbonifying
central sheet
Cimex hemipterus
Close Doors
club-hops
Coaguline
consumed amounts of materialized labour
Cosson
counterintuition
crescentic crack
dadur
departure point
dibang r.
distribution free
electric prospecting
emblematic, emblematical
EMEC
face profiling
factory service capacity
fixed depth signal source
flag sequence
Folin's sugar reagent
gaging clutch
genus Epimedium
germicide trap
gid file
girolamo
glutatiol
granate
grinding type rice milling machine
head frame
heat-exchange shell
hilus of kidney
horse race coverage
HSF (high steam flow)
inorganic peroxide
interim agreement
jumping exercise
Juncus longistamineus
krypton 84 reaction
large-amplitude-slosh liquid dynamics
Laurers canal
Laurie I.
macro crystalline
Majé, R.
material balance area
non-screen film
nonmeltable
oregon yew
ornithothoracine
parallel sorting
philbertia retellaria
protected area of mire
pusher-click driver
pykno-lepsy
quantum stage
quick disconnecting couping
radiation resistant ceramic
radio telescopic
ranirestat
reeling off
retrousse
ribaudrous
Ruotte's operation
salisbury pln.
semicured
Sir William Rowan Hamilton
sizing rolling mill
snipping off
spongy platinum
Staffelbach
standard stroke speed
sub-clone
substrate feeder
sunsted
supporting mechanism
Suslin tree
tachyphasia
telephone communication industry
Tembu
tipping over
tough alloy steel
tracing loss
vonbezingite
wiring