isotope
美 [ˈaɪsəˌtoʊp] 
英 [ˈaɪsətəʊp]
词形变化
复数：isotopes 同义词
英汉双解
1. | 同位素one of two or more forms of a chemical element which have the same number of protons but a different number of neutrons in their atoms. They have different physical properties (= characteristics) but the same chemical ones |
| radioactive isotopes 放射性同位素 |
| the many isotopes of carbon 碳的诸多同位素 |
英汉解释
英英解释
例句
Both of the experiments proved effective, moreover the latter would be better since the stable isotope is harmless.
结果指出，两种方法是等效的，由于稳定同位素对人体无害，因而后者更有应用前景。
In atomic spectroscopy, the subject of isotope shifts is one of the few problems that links atomic and nuclear physics.
原子光谱中，同位素位移是少数几个能够将原子物理学和原子核物理学这两个不同的物理学分支联系起来的课题之一。
At present, the methods of isotope tracer and turbine flowmeter are universally used for testing annulus well in home oilfield.
同位素示踪法和涡轮流量计法是目前国内各油田普遍采用的环空测井方法。
But the nitrogen in the air was replaced with a nitrogen atom with a different number of neutrons, called an isotope.
但是空气中的氮气中的氮原子却会被一个叫做同位素的有着不同数量中子的氮原子所替换。
And the heavier oxygen from a natural process that left more of the light isotope in the part of the nebula that made the sun.
重量较大的氧来自某种自然过程，在此过程中，大部分的轻同位素留在了形成太阳的部分星云中。
When a hurricane forms, it tends, initially, to rain water molecules containing the heavier isotope. At that point it is still over the sea.
飓风刚形成之初，通常位于海面上空，它所降落的雨水一般含较重氧同位素水分子。
The technique based on stable isotope labeling and mass spectrometry is one of the main supporting techniques for protein quantification.
基于稳定同位素标记的质谱分析技术是蛋白质定量最常用的方法之一。
by contrast, the comprehensive evidence and oxygen isotope temperature may be close to the actual temperature.
而综合证据与氧同位素则可能比较接近实际气温。
Nuclear Chemistry: radioactive chemicals, radiation chemistry, radiation chemistry, isotope chemistry, nuclear chemistry.
核化学：放射性化学品，辐射化学，辐射化学，同位素化学，核化学。
Experts have played down the dangers, arguing that the isotope of nitrogen known as nitrogen-16 lasts for only five seconds.
专家们说相关辐射危险性很小，因为氮的同位素氮16只会存在5秒钟。
Measured isotope peak cluster data in a mass spectral range is obtained for a given calibration standard.
对于给定的校准标准，得到在质谱范围中的测量的同位素峰集群数据。
Of early bone metastases in general without any symptoms, bone isotope scan can be found to have bone lesions.
骨转移早期一般无任何症状，骨同位素扫描可发现有病变的骨骼。
However, there is a very attractive reaction between deuterium and a light isotope of helium known as helium-3.
无论如何，在氘和一个氦的轻同位素也就是氦-3之间有一种吸引人的反应。
Recent developments of two mid-infrared tunable laser spectrometers dedicated to carbon isotope ratio determination are presented.
最近的事态发展的两个中红外可调谐激光光谱致力于碳同位素比值测定结果。
Isotope ratios of Pb contained in wares were measured using Time-Of-Flight Secondary Ion Mass Spectrometry(TOF-SIMS)without any references.
介绍了用飞行时间二次离子质谱法对器物中的铅同位素比值的测量。
The Daedalus spacecraft weighed around 50, 000 tonnes, almost all of which would have been a very rare Helium isotope called Helium-3.
代达罗斯飞船重约5万吨，大部分都是它携带的燃料——氦3。
Methods of hydrochemistry and isotope were used to analyze the 7 springs issuing along the Huanglong Ravine.
本文采用水化学和同位素方法对四川黄龙沟沿途出露的7个泉点进行了分析。
The city's challenge, chiefly, is to dispose of cesium-137, a radioactive isotope with a half-life of 30 years.
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。
After seven rounds of bacterium-based selection, the enrichment of each round was tested by isotope labeled ssDNA binding assay.
对每一轮文库标记同位素，结合实验证实第五轮文库富集程度最高。
The ratio of the silver-109 isotope to silver-107 turned out to be much higher in New World silver than in the European coins.
109同位素银和107同位素银在新世界银的比例要比来自欧洲的银币高很多。
The selection of the desired species(element, isotope, and charge state)is certified by the signature of the entire mass spectrum.
所需物质（元素、同位素及电荷态）的选择，被全部质谱的信号特征所证实。
Its most durable isotope survives only about 200, 000 years-a minute span on a stellar scale.
最持久的同位素只能存在大约二十万年--这在恒星的尺度上是一个很短的时间。
But the team found that on the Moon it was about 25 times that of the terrestrial chlorine isotope ratio.
但是研究团队发现在月球上氯的同位素的比率大约是地球上的25倍。
Studies of Pb, S, H, O isotope geochemistry indicate that the mineralization resources were from deep source fluid and rocks of the strata.
铅、硫、氢、氧同位素地球化学研究表明，成矿物质来源于深源流体及地层岩石。
These cancers can be prevented if children are given pills containing the non-radioactive isotope of iodine soon after exposure.
这些癌症其实是可以避免的，只要在受到辐射之后，马上给儿童们服用不具有放射性的碘的同位素做成的药片。
The selection of the desired species(element, isotope, and charge state)is certified by the signature of the entire mass spectrum.
所需物质（元素、同位素及电荷态）的选择，被全部质谱的信号特征所证实。
These neutrons react with nitrogen nuclei, giving out a proton and producing the active carbon isotope 14.
这些中子跟氮元素的核子产生反应，释放出一个质子并产生出活性碳同位素14。
Hydrogen and oxygen isotope data line in the vicinity of the Meteoric water line, indicating meteoric water's enrollment at the late stage.
氢氧同位素数据在大气降水线附近，指示了晚阶段大气降水参与的积极影响。
The stable hydrogen and oxygen isotope is an environmental isotope, which extensively exists in various kinds water.
稳定性氢氧同位素是广泛存在于水中的环境同位素。
Neutron flux characterization of a peripheral target position in the high flux isotope reactor.
高通量同位素反应堆中靶子位置周边中子通量特征…[中国核科技信息与经济研究院]。
Another isotope, lithium-6, is overabundant: there may be as much as 1000 times too much of it.
而另一种锂，即同位素锂-6却是过于丰富：它的含量可能是过多的1000倍。
Initial Sr isotope ratios show that the ore materials of the deposit were derived from the host rocks or Precambrian basement.
锶同位素初始比值测试结果表明大梁子铅锌矿床成矿物质来源可能主要源自围岩碳酸盐岩或基底地层。
The mineral-fluid oxygen isotope exchange in granitic rocks is mainly a non-equilibrium one in an open system .
花岗岩-体氧同位素交换反应绝大多数为开放体系不平衡类型。
Indulging in an isotope-enhanced steak or chicken fillet every now and again could add as much as 10 years to your life.
经常摄入富含同位素的牛排或者鸡片可以使你多活10年。
Numerical estimation method of the Hydrogen isotope inventory in the hydrogen isotope separation system for fusion reactor.
聚变堆氢同位素分离系统中氢同位素存量的数值估算方法…[中国核科技信息与经济研究院]。
The technology of stable C, N isotope ratio is an effective method for geographical origin traceability of beef.
利用稳定性碳、氮同位素技术是用于牛肉产地溯源的有效方法。
The results of groundwater isotope analysis show that the groundwater in the Yinchuan Plain has different recharge patterns.
地下水同位素特征表明银川平原地下水具有不同的补给模式。
Isotope contamination and big porous formation are two problems which upset the interpretation of isotope water injection profile log.
同位素污染、大孔道地层是困扰华北油田同位素吸水剖面测井的两大难题。
First, a neutron hits a lithium 7 isotope, which, although it consumes energy, produces both a tritium ion and a neutron.
首先，一个中子轰击一个，尽管会消耗能量，但是它会产生一个氚和一个中子。
Stable isotope technique is a new, innovative approach to assess the source and natural attenuation of organic pollutants in environment.
稳定同位素技术是近来发展起来用于识别和评价环境有机污染物来源和降解的新方法。
So if supersymmetry is true, there should be less of this isotope around than the Standard Model predicts.
因此，如果对超对称性确信无疑，那么宇宙空间中元素同位素的存在就会比标准模式预测的要少。
Especially when split ratios were less than 1. 0, the uncertainty of the hydrogen isotope determination results increased.
特别是当分流比较小（小于1）时，导致氢同位素值测定结果的不确定度增大；
