声纳脉冲测距系统

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发表于:2018-11-27 / 阅读(336) / 评论(0) 分类 背诵为王第二册

在今天我们要讲的两个习惯用语里,一个关键的字就是:pin。Pin这个字单独用的时候可以解释为:别针。但是,pin这个字也有不少和其他字合在一起用的时

发表于:2018-12-01 / 阅读(241) / 评论(0) 分类 美国习惯用语

The Supreme Court says it is going to review a lower court ruling protecting marine mammals from Navy sonar. NPRs Martin Kaste has more. For years, environmental groups have argued that the Navys high-intensity, submarine-tracking sonar can disorien

发表于:2018-12-02 / 阅读(191) / 评论(0) 分类 2008年NPR美国国家公共电台六月

[01:36.60]【铁 达 尼 号】 [02:18.36](Sonar Pings) [02:21.60]Man: 13 meters. You should see it. 距离13公尺,应该看得见了 [02:33.84](Sonar Pings) [02:38.52]Okay, take her up and over the bow rail. 越过船头的栏杆 [02:39.20](Over

发表于:2018-12-07 / 阅读(131) / 评论(0) 分类 听电影学英语—泰坦尼克号

发表于:2018-12-13 / 阅读(163) / 评论(0) 分类 Wee Sing Around the World

Libyan rebels and government forces have staged several offensives in the battle for control of the country. To get a clearer picture of the situation on the ground, VOA's Susan Yackee spoke to our correspondent Phil Ittner who is currently in the op

发表于:2018-12-16 / 阅读(107) / 评论(0) 分类 VOA标准英语2011年(三月)

Marine Biologists and volunteers in Key Largo are working to save the survivors of a group of dolphins that beached themselves last week in the Florida Keys. Invesigators are trying to determine if sonar from a nuclear-powered submarine played a role

发表于:2018-12-17 / 阅读(234) / 评论(0) 分类 2009年NPR美国国家公共电台7月

It really is rocket scienceresearchers are using huge x-ray scanners from NASA to understand how sonar might be affecting the hearing of large ocean mammals. These scanners are usually used to inspect the space shuttles solid fuel rockets. Navy sonar

发表于:2018-12-24 / 阅读(132) / 评论(0) 分类 Scientific American(十一)月

And they have the blemish both front and rear from a facet where the opposite tooth interlocked with it. 在牙齿前后的齿面都有缺陷就是与对面牙齿相交错的地方。 What happens is that the root is anchored well into the lower jaw.

发表于:2018-12-28 / 阅读(94) / 评论(0) 分类 侏罗纪搏击俱乐部

The sperm whale hits him dead in the centre of his body throwing the Megalodon's enormous weight in a tumble motion under the ocean. 抹香鲸结结实实地撞中它的身体中间,把巨齿鲨庞大的身躯撞得在海洋中翻滚。 The Megalod

发表于:2018-12-28 / 阅读(99) / 评论(0) 分类 侏罗纪搏击俱乐部

ENVIRONMENT REPORT - November 22, 2002: Compromise on U.S. Navy Sonar By Cynthia Kirk This is the VOA Special English ENVIRONMENT REPORT. The United States Navy has agreed to temporarily limit testing

发表于:2019-01-02 / 阅读(167) / 评论(0) 分类 健康与环境

ENVIRONMENT REPORT – August 2, 2002: Navy Sonar and Ocean Animals By Caty Weaver This is the VOA Special English Environment Report. American officials have approved a plan for the United States Nav

发表于:2019-01-07 / 阅读(139) / 评论(0) 分类 健康与环境

Renee Montagne: Hundreds of thousands of Americans have back surgery every year at a much higher rate than any other country. Whether there are too many back surgeries is a hotly debated subject in orthopedist , NPR's Joanne Silberner examines the q

发表于:2019-01-08 / 阅读(234) / 评论(0) 分类 2006年NPR美国国家公共电台

NASA Scanner Offers Clues To Whale Hearing Researchers at UC San Diego and San Diego State University have imaged whale skulls in an attempt to determine the effects of sonar on whale hearing. Cynthia Graber reports It really is rocket scienceresearc

发表于:2019-01-30 / 阅读(235) / 评论(0) 分类 60秒科学

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发表于:2019-02-10 / 阅读(169) / 评论(0) 分类 加州英语分级GK

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发表于:2019-02-10 / 阅读(199) / 评论(0) 分类 加州英语分级GK

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发表于:2019-02-10 / 阅读(208) / 评论(0) 分类 加州英语分级GK

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发表于:2019-02-10 / 阅读(217) / 评论(0) 分类 加州英语分级GK

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发表于:2019-02-10 / 阅读(220) / 评论(0) 分类 加州英语分级GK

Debris from the Rena has reached beaches in the Coromandel. There are bags of milk powder, plastic and rope on the beaches and broken containers. The sea around the Rena is white from broken bags of milk powder. There is also oil for about 3km around

发表于:2019-02-17 / 阅读(135) / 评论(0) 分类 新西兰英语
学英语单词
5-bergapten
Abū Rudeis
acest
aculops fraxinus
AFDN
air-hardening alloy
al-ready
allwright
Ashevo
barrowload
Barsaloi
beef on the bone
Beetgum
boron-loaded control rod
bottom of the league
bovine infectious petechial fever
bright etching
capital exporting countries
Carex davidii
Cijulang
clompy
consumer culture
corton-charlemagne
curdling enzyme
dees
dilettantes
echinoderm family
egg whites
Ejiao San
esophagodynia
fabula palliata
falling type safety fuse filament
ferromagnetic colloid
fibre mixture
fix someone's little red wagon
Frenet
genetic diathesis
genus muscaris
heavy rail motor car
High Middle Ages
homogeneous sill
independent educational project
infinite horizon games
interlocking tile
Ipomoea triloba
jumble
keep one's head
l'ordre
laminariose
land tax collected in kind
less-sedating
Lotophagi
lower hybrid resonance
luteuthis shuishi
matching storage hierarchy
Mesozoic erathem
metallophyte
mine vessel
mini micro
mixed-effect
monosyllabic
noblewomen
not-guilty
Nyaksimvol'
osteochondritis vertebralis infantilis
out-basket
overdetermines
paes
pitchside
polygasoline
post-yielding fracture
powdered starch
primary head vein
Pteroxygonum giraldii
pulvicoria
R.E.M.
recessus epitympanicus
salvo arm
Schwarze Elster
section off something
senior synonyms
setation
Shannon ideal code
sheep pelt
space cavity
special weapons attack
spleeted
swabbing cloth
thoxidil
to hang on
traffic volume
train brake tester
trihexylphosphine oxide
trisetum spicatum formosanum
TSYNC
undervoice
up and running
valve spindle guide
vasangor
wire-pulling
wooden knocker
woolpack cloud