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.
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.
舞毒蛾还会受到核多角体病毒或萎蔫病的攻击，在毛虫爆发的年代，这是一种特别重要的杀手。
The gypsy moth is also subject to attack by the nucleopolyhedrosis virus, or wilt disease, a particularly important killer of the caterpillars in outbreak years.
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.
卷曲藻可能是一个菌落，或者一种真核生物——其包裹在细胞膜内的细胞功能已经出现分化的生物体。
Grypania may have been either a bacterial colony or a eukaryote - an organism with specialized cells, enclosed in a membrane.
迄今为止NASA研究了两种前往那里的备选推进器：核热火箭和化学发动机。
So far NASA is exploring two options for propulsion there? A nuclear thermal rocket and a chemical engine.
伽马射线爆有长时间的和短时间的两种，其中据信由超新星核的坍塌引起的长时间伽马射线爆是最常见的。
They come in two types, long and short, with the former the most common and thought to be caused by the core-collapse of a supernova.
几乎就在五年前，美国国会削减了一种引起争议的掩体核弹——坚实型核钻地弹——的研究经费。
Almost five years ago, America's Congress cut research funding for a controversial bunker-busting nuke called the Robust Nuclear Earth Penetrator.
随后该小组将一种RNA分子注射到老鼠大脑内参与情绪反应的杏仁核。
The team then injected an RNA molecule into the rats' amygdalas, the region of the brain involved in emotional responses.
基于Wakayama提出的技术，Iritani的团队提出了一种从猛犸象卵细胞中提取细胞核而不造成损伤的方法。
Based on Wakayama's techniques, Iritani's team devised a method to extract the nuclei of mammoth eggs without damaging them.
因为新增的细胞核不会死，它们便随时可以再造肌肉蛋白，使肌肉有了一种类似记忆的功能。
Since the extra nuclei don't die, they could be poised to make muscle proteins again, providing a type of muscle memory, he says.
在那些例子中，细胞核和细胞质融合在一起，杂交细胞制造出了表达两种动物遗传密码、完美运转的酶。
In those instances nuclei as well as cytoplasms came together and the hybrid cells made perfectly functioning enzymes that expressed the genetic code of two types of animal.
染色体是在细胞核中发现的，它是一种含有基因的线型结构，能够使不同人有不同特征。
Chromosomes, which are found in the nucleus of a cell, are thread-like structures that contain genes which determine the characteristics of an individual.
一种元素的原子序数是其原子核中的质子数。
An element's atomic number is the number of protons in its nucleus.
本方法为核密度计的现场率定提供了一种简便易行、准确可靠的新途径。
This method provides a simpler, more accurate and reliable way to calibrate densimeter on the spot.
酵母基因组的易操作性及其简单稳定的培养条件，使得该真核微生物成为一种理想的药物筛选工程细胞。
The characteristics of easy genetic manipulation and simple and steady culture conditions for yeast have made this eukaryotic microorganism an attractive option for drug screening.
低场核磁技术揭示了甜玉米水状态的变化规律，为食品加工过程中物性参数的研究提供了一种有效方法。
NMR shows the change of water status in sweet corn, and it can provide an effective method to study physicochemical properties during food processing.
在这两种同属稀土金属的元素中，围绕原子核旋转的电子排列方式很不寻常，因此具有异乎寻常的强大磁性能。
These two elements, part of a group called the rare-earth metals, have unusual configurations of electrons orbiting their nuclei, and thus unusually powerful magnetic properties.
SATB1是一种由于在T细胞的分化和激活中调节相关基因表达起关键作用而广为人知的核内蛋白，它是免疫系统中的关键参与者。
SATB1 is a nuclear protein well known for its crucial role in regulating gene expression during the differentiation and activation of t cells, making it a key player in the immune system.
核外计算是解决计算机内存不足的一种有效方法。
Out-of-core computing is an efficient way to solve the problem of memory shortage.
近年来，随着转基因动物制备技术的日趋成熟与完善，建立转基因动物模型已经成为研究真核基因表达调控的一种重要手段。
Recently, with the development of transgenic technology, producing transgenic animal model has become an important way to study the expression regulation of eukaryotic genes.
为对真核基因的选择性剪接形式进行准确、快速、有效的研究，提出了一种启发式多序列比对算法。
A heuristic algorithm for multiple alignment was developed to more effectively study alternative splicing patterns of eukaryotic genes.
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.
硼是一种可以吸收中子的元素，中子是一种存在于所有的原子核中的亚原子粒子。
Boron is an element with the ability to absorb neutrons, the sub-atomic particles that occur in the nucleus of all atoms.
重水因含重氢而得名。重氢是氢原子的一种，其原子核中含有一枚中子，加之正常氢元素中的质子，重量为一般氢原子的两倍。
Heavy water gets its name because it contains deuterium, a form of hydrogen that has a neutron in its nucleus as well as the usual proton and thus weighs twice as much as the ordinary sort.
另一种蛋白质与抗 laminB抗体反应，位于滋养核中。
The other protein reacts with anti-lamin B antibody and is situated in the macronucleus.
另一种蛋白质与抗 laminB抗体反应，位于滋养核中。
The other protein reacts with anti-lamin B antibody and is situated in the macronucleus.
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