液体吸气换热器

Part 13 Ballast handling 1. Scuppers plugged. 2. Open sea suction valve and report. 3. Sea suction valve closed. 4. Ballast pump stopped.

发表于:2018-12-05 / 阅读(174) / 评论(0) 分类 海事英语

DIALOG 30 1--Did you hear about that guy who climbed a skyscraper? 2--I don't believe I did. Was it on the TV news last night? 1--Uh-huh. This guy-calls himself

发表于:2018-12-26 / 阅读(117) / 评论(0) 分类 英语经典听力对话

Idiom: Not hurt a fly 表示一个人心地非常善良 Hit the book: Architect Contradictory Buoyancy Depict Testimony Suction Splash Roller coaster

发表于:2018-12-27 / 阅读(158) / 评论(0) 分类 趣味青春英语

DIALOG 30 THE HUMAN FLY 1--Did you hear about that guy who climbed a skyscraper? 2--I don't believe I did. Was it on the TV news last night? 1--Uh-huh. This guy-calls himself

发表于:2018-12-27 / 阅读(115) / 评论(0) 分类 英语听力训练连载

DIALOG 30 THE HUMAN FLY 1--Did you hear about that guy who climbed a skyscraper? 2--I don't believe I did. Was it on the TV news last night? 1--Uh-huh. This guy-calls himself

发表于:2018-12-27 / 阅读(104) / 评论(0) 分类 听力每日练习

Why refrigerators hum? Why refrigerators hum,on toay's moment of science.On the recent program we have discussed how fluorocarboncoolant cools your food by coming to a boil in coils hidden in your fridge. How is this possible? When you boil water o

发表于:2018-12-31 / 阅读(137) / 评论(0) 分类 英语听力文摘 English Digest

The Rolling Boil That Cools Your Food When you think of something boiling, you probably picture a pot on the stove, but theres another kitchen appliance that brings liquid to a boil, not to heat food, but cool it. It sounds crazy, but household refri

发表于:2018-12-31 / 阅读(137) / 评论(0) 分类 英语听力文摘 English Digest

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene

发表于:2019-01-08 / 阅读(206) / 评论(0) 分类 Scientific American(四)月

This is the VOA Special English Development Report. Dye can bring a little color to life. Most clothing is colored with dyes. Modern, manufactured dyes can be costly. Natural dyes from plant and animal products have been used since ancient times. So

发表于:2019-01-11 / 阅读(145) / 评论(0) 分类 VOA慢速英语2008年(十一)月

This is the VOA Special English Development Report. Dye can bring a little color to life. Most clothing is colored with dyes. Modern, manufactured dyes can be costly. Natural dyes from plant and animal products have been used since ancient times. So

发表于:2019-01-11 / 阅读(139) / 评论(0) 分类 VOA慢速英语2007年(五)月

This is the VOA Special English Development Report. Dye can bring a little color to life. Most clothing is colored with dyes. Modern, manufactured dyes can be costly. Natural dyes from plant and animal products have been used since ancient times. So

发表于:2019-01-11 / 阅读(158) / 评论(0) 分类 2010年VOA慢速英语(八)月

Fish Use Whole Bodies When They Eat Fish are animals that live in the water. They are also vertebrates animals that have a backbone and a spine. They have gills that permit them to take oxygen from the water. But have you ever wondered how vertebrate

发表于:2019-01-12 / 阅读(107) / 评论(0) 分类 2015年VOA慢速英语(七)月

AS IT IS 2016-08-10 What Are Those Marks on the Olympic Athletes? American swimmer Michael Phelps has won more Olympic medals than anyone in history. On Sunday night, he added another gold medal as a member of the USA 4x100-meter freestyle relay team

发表于:2019-01-12 / 阅读(174) / 评论(0) 分类 2016年VOA慢速英语(八)月

Lesson 35 Getting up Steam 第35课 蒸汽往上冒! Do you want to know what steam is? Let us get a lump of ice, or a snow-ball, and place it in a saucer in a warm room. It soon melts, and then the saucer is half full of water. If we leave the sau

发表于:2019-02-07 / 阅读(125) / 评论(0) 分类 英国学生科学读本

We might not be alone in the universe. Actually, it may be confirmed as a very crowded place by new computer models developed to help identify habitable planets. Estimates of places that can sustain life have been based on the likelihood of them havi

发表于:2019-02-13 / 阅读(93) / 评论(0) 分类 英语听力精选进阶版

At one time it was believed that heat was a liquid. Sure, that sounds kind of crazy, but if you think for a second, you might see why. Suppose you have an object thats very hot say a metal spoon thats been sitting in hot coffee. Pick it up and you ca

发表于:2019-02-23 / 阅读(118) / 评论(0) 分类 英语时差8,16

Why does blowing on hot soup help to cool it off? Its because of evaporation. Evaporation cools down a liquid because the most energetic molecules leap off the surface and leave the slower-moving molecules behind. Slower-moving means lower temperatur

发表于:2019-03-06 / 阅读(167) / 评论(0) 分类 英语时差8,16

Instead of burning coal, oil, or biomass to heat things up, scientists have found that its possible to use solar energy. For example, some experimental facilities use thousands of mirrors to reflect sunlight onto a large plate on a tower, heating it

发表于:2019-03-06 / 阅读(174) / 评论(0) 分类 英语时差8,16

I know that solar energy can be used to make electricity and to heat water and air. But can solar power also be used to make liquid fuels? Until recently, the practical answer was no. Photovoltaic panels absorb sunlight and use it to create an electr

发表于:2019-03-06 / 阅读(153) / 评论(0) 分类 英语时差8,16

The Heat Is On 热传递,是热从温度高的物体传到温度低的物体,或者从物体的高温部分传到低温部分的过程。热传递是自然界普遍存在的一种自然现象。只要物体之间或同一物体的不同部分之间

发表于:2019-03-09 / 阅读(164) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
-fix
accompanying
adaptive jammer
air-tight access door
alms-houses
aluminium-plated steel
apron dress
backyardism
bdfp
between-class correlation
blade foot
bolt header
bomapin
cartelizing
charge storage tube
Clinfenicol
clinically dead
closure of simplex
contenderes
deck strake
device control information
dialysis apparatus
diesel fuel tax
doggedly
edema of the face
El Tarugo
encephalomata
equivalent chain length
etym.
eylure
fan exhust
faned
fence planting
finite automation
flip-charts
foreign exchange license
form code
framable
gaging surface
ground bituminous coal
gutterling
hemangiectatic
hexaprotodon liberiensis
Higgs field
HS-COA
idle hands
John F.Kennedy International Airport
kynges
lower composition of group of capital
marginal factor revenue
Mechow
MF resin
multiparticle tunneling
nadhmi
neon indicator
non-reactive suspension
oxidation enzyme
pack(ag)ing material
Palestinianizes
petroleum processing
Phen ergan
phototransducer
physical selection
pittled
pnoes
prism optometer
prophelan
pulse-shape analyzer
pyridazone
reproductive differentiation
revenge tragedy
rhythmic montage
running aways
scaldeth
scopulariopsis musae
serratia marcesen
silver ring
snobbish
sorption capacity
spuare rump
St Margaret
start-up time
statical test
Steinfurt
stellarators
sthenically
stiglers
students' organization
succinic acid oxidase
tactical model
tape-to-card conversion
The old woman is plucking her geese.
top forty
uhvs
undulating topography
unweldable
Upper Brookville
Vallisneria spiralis
villela
what one calls
yaquis
zatocode indexing