单词isotope
n.: 同位素
网络: 同位素是；同位素测年；同位素检查
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
【化、物】同位素
复数：isotopes
Adj.+n.:
radioactive isotope
n.elementformvariantversion
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。