蒸汽提浓法

If the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic salinity. One of these is the

发表于:2018-11-28 / 阅读(370) / 评论(0) 分类 新概念优美背诵短文50篇

Aqua Spacecraft 水资源监测太空船 NASA's latest and most ambitious weather satellite is measuring Earth's water cycle. Learn more about the Aqua satellite -- today on Earth and Sky. DB: I'm Deborah Byrd. JB: And I'm Joel Block for Earth and Sky. This

发表于:2018-12-07 / 阅读(147) / 评论(0) 分类 (科普英语)Earth and Sky

Conditions on Mars were so harsh that it was hard to imagine any life surviving there. The idea of sophisticated aliens was wiped out. We know that conditions on Mars today are not very good for life.

发表于:2018-12-07 / 阅读(148) / 评论(0) 分类 火星生命

21 James Watt And The Teakettle 詹姆斯瓦特和水壶 James Baldwin 詹姆斯.鲍德温 A little Scotch boy was sitting in his grandmothers kitchen. He was watching the red flames in the wide open fire- place and quietly wondering about the caus

发表于:2018-12-28 / 阅读(123) / 评论(0) 分类 陈冠商英语背诵文选合集

Rainforests exist because it rains a lot and that makes the forests grow, right? Well, not so fast. What if its not the rain that makes the forestswhat if its the forests that actually generate the rain? Thats the contention of a paper in BioScience

发表于:2019-01-02 / 阅读(196) / 评论(0) 分类 60秒科学

Rainforests exist because it rains a lot and that makes forests grow, right? Well, not so fast. What if its not the rain that makes the forests? What if its the forests that actually generate the rain? That is the contention of a paper in BioScience

发表于:2019-01-08 / 阅读(157) / 评论(0) 分类 Scientific American(五)月

Cooking is one big science experiment and chefs have been gaining fame for more explicit uses of scentific techniques and tools in the kitchen. Now, according to an article in the December issue of physics world, mixologists the folks behind the bar

发表于:2019-01-08 / 阅读(148) / 评论(0) 分类 Scientific American(十二)月

The Salinity of Ocean Waters If the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic s

发表于:2019-01-08 / 阅读(157) / 评论(0) 分类 英语小短文

科学家估计,如果不减少二氧化碳排放,2100年地球平均气温将至少上升4摄氏度,到2200年会上升8摄氏度,无疑是地球灾难性的噩梦。 此前有科学家用气候模型分析称,全球气温将受二氧化碳排

发表于:2019-02-06 / 阅读(127) / 评论(0) 分类 阅读空间

BEIJING, Oct. 21 (Xinhuanet) -- A team of European researchers announced that they have found vast water vapor out of our solar system, according to a study in the U.S. journal Science Friday. Using Herschel Space Observatory, a European Space Agency

发表于:2019-02-09 / 阅读(164) / 评论(0) 分类 英语新闻

Man, born of woman, is of a few days, and full of trouble; 人从呱呱落地,只是短暂的几天,麻烦不断; He cometh forth as a flower, and is cut down; 他初如鲜花哪堪折; He fleeth also as a shadow, 像影子一样循去, And

发表于:2019-02-11 / 阅读(123) / 评论(0) 分类 美国语文第六册

【英文原文】 If I were to stop drinking water right now, how long could I live? There are several different factors involved here. A human being isnt an automobile which needs a certain amount of gas. There are conditions under which a person c

发表于:2019-02-16 / 阅读(124) / 评论(0) 分类 英语听力广播—Listening

What the Student Say in Science Classes 自然科学课上学生们都说了什么 The following quotations were gleaned from classroom discussions in 5th and 6th grade science classes. 下面的这些话都是从五六年级的自然科学课的课堂

发表于:2019-02-17 / 阅读(148) / 评论(0) 分类 英语小达人

LOS ANGELES, April 18 (Xinhua) -- Sugarcane(甘蔗) has the effect of cooling temperatures(温度) , thus playing role in stemming global warming, a new study has found. Sugarcane does so by reflecting sunlight back into space and by lowering the

发表于:2019-02-18 / 阅读(144) / 评论(0) 分类 英语新闻

There are 320 million cubic miles of water on Earth and that is all we're ever going to get. 地球上有13亿立方公里水,这是全部。 The system is closed: practically speaking, nothing can be added or subtracted. 系统已经关闭,说得明

发表于:2019-02-25 / 阅读(150) / 评论(0) 分类 万物简史

Because the greatest necessity for so doing would seem to be, when in feeding he accidentally takes in water. 因为,它之所以要这样排水,最大的原因倒似乎是因为它在吃东西的时候,偶然吸进了水的缘故。 But the Sp

发表于:2019-02-25 / 阅读(126) / 评论(0) 分类 白鲸记

Furthermore, as his windpipe solely opens into the tube of his spouting canal, 而且,因为它的气管是单独通向它那喷水道的管子的, and as that long canallike the grand Erie Canal is furnished with a sort of locks (that open and s

发表于:2019-02-25 / 阅读(135) / 评论(0) 分类 白鲸记

How obvious it is it, too, that this necessity for the whale's rising exposes him to all the fatal hazards of the chase. 鲸既然必需这样冒出水面来,那么,它显然就有遭到追击的一切生命攸关的危险了。 For not by hook o

发表于:2019-02-25 / 阅读(128) / 评论(0) 分类 白鲸记

The Salinity of Ocean Waters If the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic s

发表于:2019-02-25 / 阅读(199) / 评论(0) 分类 双语有声阅读

James Watt And The Teakettle A little Scotch boy was sitting in his grandmother's kit- chen. He was watching the red flames in the wide open fire- place and quietly wondering about the causes of things. In- deed, he was always wondering and always wa

发表于:2019-02-25 / 阅读(119) / 评论(0) 分类 双语有声阅读
学英语单词
a dramatic stage pose
adangle
animadvertence
antisaprobic
ascarid
ascendings
assholeries
barroom
bloco
boskey
brown alga
calcination of radioactive waste
camshaft lathes
ceska kamenice
chenard
chromium doped ruby crystal
chromodynamics
church-land
clevelands
cold seep
Covasna
crop-growings
diffusion treatment
distance-lens
dorsal ventral axis
Doulou
drama theater
expugned
female union
fore-reach
fuel central temperature
genital tuft
growth information
gunks
high pressure nervous syndrome
hundred-and-sixtieth
imagism
INDOSTOMIFORMES
inferior twin muscle
inside-plant
intermediate crossbeam
jumping bar
labial tumor
lay board
lay down arms
lift gas return
Los Flores
low water float operated valve
maximal sustainable yield
memory in key
muses
Nalpen
non-moral
objet d'art
obtusialactone
oil feeding tank
operating system architecture
organic electroluminescent display
overcurrent relay
overhang bracket
Oxoralen
paintmaker
perivincine
phenosuccinate
plant box
plantarenaloside
program controlled robot
pseudoporous
pupilesses
quasihemidemisemiquaver
random file
rate of rise
role of soybean production
rope clip
sagenite(sagenitic quartz)
scuzzy
self-regulated machine
settle ... in
single-cycle system
slope detection
staystitches
still air
stockkeeper
stratuss
strich
summer-time
supporting ridge
supraconduction
tetanus-pertussis
thread error
throw the baby out with the bath water
total mass flow signal
travel(l)ing matte
trichodarteriitis
tropical ameba
twin images
under protest
villanage
vosloo
watched over
wavebands
wrestle with