酸中和能力

Acid Rain 酸雨 Damage from acid rain is widespread - not just in eastern North America, but throughout Europe, Japan, China, and Southeast Asia. Is the rain that's falling on your umbrella acidic? A listener's question -- on today's Earth and Sky. J

发表于:2018-12-07 / 阅读(146) / 评论(0) 分类 (科普英语)Earth and Sky

How does acid deposition affect human health? We eat food, drink water, and breathe air that has come in contact with acid deposition. Canadian and U.S. studies indicate that there is a link between t

发表于:2019-01-02 / 阅读(180) / 评论(0) 分类 知性英语

This is Scientific Americans 60-Second Science. Im Cynthia Graber. Thisll just take a minute. Heres a strange tale of two previously unrelated food products. First: chitlins, that delicacy of fried pig large intestines. Theyre well-loved throughout t

发表于:2019-01-08 / 阅读(44) / 评论(0) 分类 Scientific American(十一)月

Flu Virus Disarms Immune System's First Responders 流感病毒瓦解免疫系统的第一道防线 From VOA Learning English, this is the Health Report. 这里是美国之音慢速英语健康报道。 Infection by the influenza virus may be more co

发表于:2019-01-12 / 阅读(102) / 评论(0) 分类 2013年VOA慢速英语(十二)月

美国准备销毁叙利亚化学武器 The U.S. Defense Department is preparing to test a system it plans to use to destroy Syria's chemical weapons stockpiles at sea. Officials are offering reassurances that the process will be safe. 美国国防部正

发表于:2019-01-18 / 阅读(37) / 评论(0) 分类 VOA双语新闻 2013年12月

Meanwhile the tireless Rutherford, now back at Cambridge as J. J. Thomson's successor as head of the Cavendish Laboratory, came up with a model that explained why the nuclei didn't blow up. He saw that they must be offset by some type of neutralizing

发表于:2019-02-17 / 阅读(41) / 评论(0) 分类 万物简史
学英语单词
-wich
abditory
acetowhitening
agraian discontent
agricultural products processing
Andalusia
apocrine sweat gland
Arlacel-40
as long as you love me
ascar
auto-antigenation
azure pigment
berberatis
bioswales
Charpy-type test
chiffe
cinnamein
circannian
coexistence model
conventional tariff
core binder pitch
crioscopic method
critical temperature resistor
cultured mushroom
Currer
Dielectric Withstand Voltage Test
directory assistance bureau
drip feed carburizer
eai
equisetum sylvaticums
esophageal foramina
extensible markup language base
fast screen
fatty(fa/fa) rat
flat-bottomed bin
Flower's Gove
Frauenwald
Freund's anomaly
Gaddafy
gaita
Gehenna
GLBT(gay-lesbian-bisexual-transgender)
glidiazinamide
gripper
half-sections
Harrod neutral technical progress
hetaryne
hordeolum
HYPN
immersion freezing system
in step
indirect-fired drying
iron art
LACR
Lagny
LAL-43
light pens
lower branch of meridian
Lysimachia lancifolia
Mendel's laws
missionarism
monoenergetic
moonhood
neuronophagia
null-homotopic
Nunobiki-sanchi
one-way stack automaton
Os incisivum
output mechanism
outsider
oxypressin
parathormon(e)
paratransgenetics
passes around
patrimonies
Piassabussu
profund facial lateral trunk
raspyce
rauoi
real emotion
real estate ownership
resistant to rust
risk-aversion
Rose Revolution
Sander's sign
Scanzoni maneuver
servo integrator
split coax balun
spread-over system
stonyfield
stul
surface beacon
sushumnas
Thomas Augustus Watson
tirer
transposing keyboard
Tropical Experiment Board
trumonts
Vavoua
what the heck
wind-generated water wave
zyg-