图表展示了一组核事件以及它们的等级排位。
Our chart presents a selection of nuclear incidents and their ranking on the scale.
美国将在接下来的12个月之内举办一次关于核安全的峰会。
America would host a summit on nuclear security within the next 12 months.
步骤一：把油梨剖开，从中间取出核。
Step One: Open the avocado and remove the pit from the center.
华盛顿的物理学家Ken Bergeron在一次核安全专家电话会议中表示，发电机的故障在技术上被称为电厂断电场景。
The failure of both generators is technically called a "station blackout" scenario, says physicist Ken Bergeron at a teleconference of nuclear safety experts in Washington d.
建造防核堡垒并不是一件容易的事。
一种组蛋白的八聚物把DNA打包成一种叫做核小体的结构。
An octa-mer of histones package DNA into a structure called a nucleosome.
首先，这些武器应当只在遭受核袭击后反击时才使用。其次，这些武器的拥有必须是一种临时的应急手段。
First, the weapons should be intended for use only in retaliation after a nuclear attack. Second, the possession of the weapons must be a temporary expedient.
我们必须尽我们的一切所能杜绝核恐怖问题的发生。
We must do whatever we can to prevent realization of nuclear terrorism.
皮诺乔一眨眼就吃了一个梨，正要把梨核扔掉，杰佩托却抓住他的胳膊。
Pinocchio ate one pear in a twinkling and started to throw the core away, but Geppetto held his arm.
第一，切实履行核安全的国家承诺和责任。
两国在反恐、防扩散、气候变化、朝核、伊朗核等一系列国际地区和全球性问题上也开展了富有成效的磋商与合作。
We have also had productive consultation and cooperation on a series of regional and global issues such as counter-terrorism, non-proliferation, climate change, the Korean and Iranian nuclear issues.
从最通俗的角度讲，核反应实质上就是发生在原子核中的一种反应过程。
A nuclear reaction is at its most basic nothing more than a reaction process that occurs in an atomic nucleus.
她接着说：“我们目前正在进行更深层次的研究，来进一步了解杏仁核和其他脑部区域如何影响人类的社会行为。”
She added: 'Further research is in progress to try to understand more about how the amygdala and other brain regions are involved in social behaviour in humans.'
研究人员一度以为，只有单细胞生物，如原核生物和原生动物，才能在深海缺氧环境中生活。
Researchers had thought that only single-celled organisms such as prokaryotes and protozoa could live in the oxygen-deprived environments of the deepest ocean.
MRI是将患者置于某一强磁场中，该磁场可让患者机体原子核（其运动类似于磁化的陀螺）顺着磁场方向排列。
In MRI, the patient is placed in a strong magnetic field that causes some of his body's atomic nuclei, which act like tiny magnetised spinning tops, to align themselves with the field.
今天，对核安全和不扩散，以及对美俄关系而言，都是一个重要的里程碑。
Today is an important milestone for nuclear security and non-proliferation, and for U.S.-Russia relations.
活动星系从它们的核部发出明亮的光芒，在那里，气体被加热并压缩成一个漩涡状的圆盘，漩涡的中心便是黑洞。
Active galaxies give off bright radiation from their cores, where gas heats up as it is compressed into a swirling accretion disk encircling the black hole.
早在两年前，有另一个研究小组宣称可将量子数据存储于原子核内2秒钟，但是他们并没有用电子手段读出数据。
Two years ago, a different research group reported storing quantum data for two seconds within atomic nuclei, but they did not read it electronically, Boehme said.
甘德森说：“那些增加的细胞核至少还会存在三个月——对于平均寿命只有两年的老鼠而言，可算是很长的一段时间了。”
The extra nuclei stick around for at least three months -- a long time for a mouse, which lives a couple of years on average, Gundersen says.
届时，这家全球最大的服务器供应商将带来三款新的EX5系统：四路和双路机架式服务器，以及一款刀片式服务器，这几款服务器将采用英特尔即将推出的八核Nehalem-EX处理器。
IBM will introduce three new EX5 systems including four-socket and two-socket rackmount servers and a blade server. The servers will use Intel's upcoming eight-core Nehalem-EX processor.
美国国际集团是一家保险核保人机构。
在一个原子的核内，中子和质子聚合在一起。
Neutrons and protons are bound together in the nucleus of an atom.
这么大的原子核不可能是稳定的，但在足够长的时间内，在真空附近组装一个原子核以观察真空的衰变是可能的。
A nucleus that large cannot be stable, but it might be possible to assemble one next to a vacuum for long enough to observe the decay of the vacuum.
一旦合成，组蛋白就会进入细胞核，细胞核内的DNA片段会将组蛋白包裹起来，形成一种类似串珠或绳结的结构。
Once synthesized, the histones move into the cell nucleus, where a section of DNA wraps around them to form a structure that resembles beads, or knots, on a string.
核多角体病毒感染是这些不同物种共有的一个因素。
Nuclear polyhedrosis viral infection is one factor these disparate species share.
核多角体病毒感染是这些不同物种共有的一个因素。
Nuclear polyhedrosis viral infection is one factor these disparate species share.
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