对贝壳的同位素分析使得地质学家可以测量另一种冰川效应。
Isotopic analysis of shells allowed geologists to measure another glacial effect.
研究人员对间冰期气候的线索来自保存在GRIP 冰芯中的两种略微不同类型的氧——即同位素氧-16和氧-18的比率。
Researchers' clues to the Eemian climate come from measurements of the ratios of two slightly different types of oxygen, isotopes oxygen-16 and oxygen-18, preserved in the GRIP core.
这些物质被称作“放射性同位素”—同一种元素的变种，他们具有异常的中子数量，频繁的衰变和放出辐射。
These materials are known as "radioisotopes" -versions of an element that, because they have an abnormal number of neutrons, frequently decay and release radiation.
这可以通过一种特殊URI 来实现，这种 URI不引用服务器上的物理文件，而是引用从不同位置中的脚本或页面提供的内容。
This is achieved through URIs that refer not to a physical file on the server, but to content which can be delivered from a script or page in a different location.
通过分析其中的同位素(同一种元素拥有不同的质量)比例，他可以了解这些菊石所生活的环境特征，如温度和盐度。
By analyzing ratios of isotopes — variations of the same element with a different mass - he can learn things about the environment they lived in, such as temperature and salinity.
经过了上千年，这两种碳同位素的比例一直是不变的。
For thousands of years, the ratio between the two has been the same.
在18件样本上检测了氧和锶的同位素。这两种元素在牙齿成型时，会固定在牙釉质上。
Oxygen and strontium isotopes, which are fixed in dental enamel at the time of tooth formation, were tested in 18 subjects.
这座城市面临的最大问题就是处理铯—137，这是一种半衰期为30年的放射性同位素。
The city's challenge, chiefly, is to dispose of cesium-137, a radioactive isotope with a half-life of 30 years.
目前，一个研究小组打算通过对比月球和地球岩石中氯的两种同位素，或两种形式的氯来解决这个疑团。
Now, a team has attempted to solve the mystery by comparing the ratio of two isotopes, or forms, of chlorine in lunar and terrestrial rocks.
冰河时期海洋中多空虫贝壳化石中积聚的较重的氧同位素比较多，而另一种轻的氧同位素则更多地积聚在古代冰层和积雪中。
During glacial periods, the forams' shells contain more of the heavier of two oxygen isotopes, as the lighter one is preferentially accumulated in snow and ice rather than the ocean.
反应堆释放的一种放射性物质就是碘的同位素，其会人们尤其是儿童造成严重的健康损害。
One of the radioactive materials released by reactors is radiative isotopes of iodine, which poses a serious health risk particularly to children.
夏普和他的同事对此过程中两种氯同位素的情形进行了研究。
Sharp and his colleagues studied what happened to two isotopes of the element chlorine during that process.
撞击会生成两种拥有117个质子的同位素，其中一种元素有176个中子，而另一种元素有177个中子。
The collision spit out neutrons to create two isotopes of an element with 117 protons, one with 176 neutrons and the other with 177.
效果最为强烈的便是锂元素的形成，这种元素有两种同位素。
The most dramatic effect would have been on the formation of lithium, an element that has two isotopes.
其中放置了一个更微小的氘(氢的一种同位素)燃料丸。
It contains a tiny pellet of fuel made from an isotope of hydrogen called deuterium.
他灌输给我一种帮助同伴是责任的意识，渗透给我无常命运中我们和其他人一样处在相同位置的看法。
He instilled in me a sense that there is a duty to help your fellows and the perspective that we are all only a trick of fate from being in the same position [as someone else].
为了调查皮肤对双酚a的吸收水平，研究者用放射性同位素对双酚a做了标志，观察放射性标志在猪耳朵皮肤内的活动——这是种广泛应用的代替人类皮肤的实验模式。
To investigate levels of skin exposure, the researchers took radioactively labelled BPA and observed the movement of radioactivity through pig ear skin - a widely used model for human skin.
西姆斯使用放射性计时器测定并比较氡的两种同位素，以此来解密火山的活跃程度。
Sims USES radioactive clocks to decipher volcanic processes, measuring and comparing two isotopes of radon.
昆兹表示，苹果已经为一种新型三维技术申请了专利，该技术不但无需使用特制的眼镜，而且允许多个观众从不同位置观看。
Kunz notes that Apple has registered a patent for a new kind of 3d technology that doesn't require special glasses and also allows multiple people to watch from different positions.
普渡大学物理教授EphraimFischbach，将探测几种同位素的放射性衰变速率的方法作为一种没有人为输入因素干扰的产生随机数的可能方法。
Ephraim Fischbach, a physics professor at Purdue, was looking into the rate of radioactive decay of several isotopes as a possible source of random numbers generated without any human input.
最好的核聚变材料有两种，即氢的同位素——氘和氚。
The best fuels for fusion are two types, or isotopes, of hydrogen - deuterium and tritium.
因此，通过测量树的不同年轮(ring)中两种氧同位素的比例，并将结果比对年轮所显示的树龄，就可再现树木一生中所经历的所有飓风。
So, by measuring the ratio of the two isotopes in the rings of trees, and matching the result to the age of the ring, a history of hurricanes spanning the life of the tree can be reconstructed.
从那以后，世界各地的研究人员相继发现了30种不同的基因样本和CMT有关，另外有10处染色体上的不同位置的基因可能与CMT有关。
Since then, researchers around the world have discovered 30 other genetic variants that are linked to the disorder and 10 other locations on chromosomes that appear to carry genes associated with it.
两种痛苦出现在人脑的不同位置：一部分只记录下事件、另一部分持续不断地产生关于这些事件的思维流。
The two kinds of suffering occupy different sections of the brain: One part simply registers events, while another creates a continuous stream of thoughts about those events.
同位素：一种化学元素的两个或多个类型，它们的原子核具有相同的质子数，而中子数却不同。
Isotope: One of two or more species of atoms of a chemical element having nuclei with the same number of protons but different Numbers of neutrons.
另外一种被称为“幻影触觉”的错觉，是通过同时放置正在振动的物体在皮肤的不同位置点上，从而在这两点之间产生一股触觉。
Another illusion known as' phantom tactile sensation 'is done by placing vibrating objects at different points on the skin at the same time which creates a tactile sensation between the points.
第三种重要方法是同位素示踪分析。
第三种重要方法是同位素示踪分析。
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