标签：atoms 相关文章
A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the
新东方背诵文选
The human body replaces 98 percent of its atoms yearly, but the makeover prompts wider questions. From NPR news, this is All Things Considered. I am Debbie Elliott. Time now for our look at some of the elemental questions of life in our segment Scie
2007年NPR美国国家公共电台
Once again, North Korea has defied international demands to give up its nuclear and missile programs. They're illegal, as far as the United Nations is concerned. They're a right as far as North Korea is concerned. And the communist country said on Su
CNN美国有线新闻2017年9月
Why Diamonds Really Are Forever Diamonds are forever they say, and this is why: diamonds are the hardest substance known to exist. Nothing would scratch or damage a diamond，While a diamond can scratch any other material on the earth. Everything is
英语时差8，16
图片1 atom n．原子 例句：An atom bomb would destroy a city. 一颗原子弹可以摧毁一个城市。 atomic adj. 原子的，原子能的，微粒子的 例句：Since the advent of atomic power, there have been great changes in industry. 自
漫画搞定六级词汇（文本+音频）
A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the Sun constantly pours out into space as light and h
考研背诵50篇
World's First Nuclear Fusion Reactor 50 Percent Complete At the Geneva Superpower Summit in November 1985, American President Ronald Reagan met with the Soviet Union's General Secretary Mikhail Gorbachev. 在1985年11月的日内瓦超级大国首脑会
2018年VOA慢速英语(一)月
Intermediate filaments - unlike microfilaments and microtubules, they are verystable. Instead of being stacked proteins, as in actin, intermediate filaments are built of interlocking proteins. A dense
医务英语
Junctional epithelium - the epithelium which seals the base of the gingival sulcus against the tooth. Keratan sulphate - a glycosaminoglycan found in cartilage, with chondroitin sulphate. Keratin - a
医务英语
Covalent bond - a strong bond between atoms formed by sharing outer electrons. When an atom has 8 outer electrons it is stable. Those which naturally have 8, like neon and argon gasses are quite unrea
医务英语
Abductors - muscle taking a limb or the jaw away from the body. Acetyl choline - Aneurotransmitter substance found at all cholinergic synapses including those of motoneurones at the neuromuscular junc
医务英语
The secret of the diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in plants, animals and our bodies. Carbon everywhere. And yet diamonds are some of the rarest, most beautiful of all su
自然百科2009年
Those planets are all going to be so hot, and you cant develop something as complex as life. Scientists have gone back to the drawing board, looking to find worlds capable of supporting life, small rocky planets like earth. We dont know that life has
自然百科2010年
Motional Induction Last time, we talked about motional induction , a phenomenon by which the ocean generate s a magnetic field. It works like this: earth has its own magnetic field. The ocean has plenty of charged atoms in it, in the form of dissolve
英语听力文摘 English Digest
By Peter Fedynsky Moscow 20 December 2007 The director of the Russian company building Iran's nuclear power station at Bushehr says the facility will not begin operations before the end of 2008. VOA Correspondent Peter Fedynsky reports from Moscow. T
VOA常速英语2007年（十二月）
英伦摇滚乐队 Radiohead 主唱 Thom Yorke 分支乐队 Atoms For Peace 最新录影带《Before Your Very Eyes》正式推出！是谁来自山川湖海 , 却囿于昼夜、厨房与爱，MV 沾染了些许超现实主义气质，细碎的街拍与
流行英文歌曲
Do you appreciate the small things in life? In physics, infinitely small things are problematic. If a structure can be infinitely divided into smaller parts, can there be such a thing as a smallest possible space or does this division go on eternally
英语听力精选进阶版
Why Teflon Is Slippery？ 1954年，法国工程师马克格雷瓜尔(Marc Gregoire)的妻子柯莱特(Colette)突发奇想，觉得丈夫用来涂在钓鱼线上防止打结的不粘材料特氟龙(Teflon)如果可以用在煎锅上，效果一定不错
英语听力文摘 English Digest
On a previous Moment of Science we discussed one of the problems with turning yourself invisible. Sure, it sounds like fun. But a little physics showed us that the invisible man couldn't see anything either, because in order to see, light has to inte
英语时差8，16
Did you ever wonder why sugar dissolves in a cup of coffee? Why not have the sugar just float in the middle of the cup, without dissipating into the coffee? Its because of the way water molecules interact with molecules in other substances. A water m
英语时差8，16