同位素的例句（同位素在句子中的用法）

• The isotopic signatures of most ancient limestones indicated the same process. 大多数古代石灰岩的同位素特征说明了同样的过程.
• The Minnesota work on kaersutite also showed the presence of the isotope neon - 21. 明尼苏达大学关于钛角闪石的研究表明,其中也存在同位素氖 - 21.
• Tritium is one of the mildest radioactive isotopes. 氚是最和缓的放射性同位素之一.
• the many isotopes of carbon 碳的诸多同位素
• The isotope ratio is directly used for comparing oils or gases. 同位素比率直接用于比较各种石油或天然气.
• Lasers promise to change this by making isotope separation easier, and cheaper. 激光可以改变这种局面,从而使同位素分离变得比较容易 、 比较廉价一些.
• Nucleon and use of radioactive isotopes to launch particle ionizing air molecules. 核子中和利用放射性同位素发射粒子,使空气分子电离.
• Today, most cyclotrons are used either for instructional purpose or for isotope production. 今天大多数回旋加速器是用在教学上,或者用于同位素生产.
• The inferno spewed a deadly plume of radioactive isotopes into the atmosphere. 这个象炼狱般的地方将一缕致死的放射性同位素喷入大气层.
• This indium isotope was created at the same time as the earth. 这种铟同位素与地球产生在同一时代.
• The application of IDMS on the analysis of environmental samples in the past years is introduced. 综述了同位素稀释法在环境样品分析中的应用.
• This article briefly describes the method and applications of isotopic dilution mass spectrometry ( IDMS ). 本文扼要地叙述了同位素稀释质谱 ( IDMS ) 及其在化学计量学中的应用.
• The method of determining Ni, Cu and Pbi n urine with isotope dilution mass spectrometry ( IDMS ) is described. 介绍了采用同位素稀释质谱法 ( IDMS ) 测定冻干人尿样品中镍 、 铜、铅的含量.
• Evidence from isotopic dating suggests that the greenstone belts vary considerably in age. 来自同位素年龄鉴定的证据指出,绿岩带在年龄上彼此变化相当大.
• The isotopic dating and fossil geochronometry are the basic methods of ophiolite geochronometry. 同位素测年及化石年代学法是蛇绿岩年代学研究的基本方法.
• Even Francium's most stable isotope, Francium - 223 only has a half - life of 22 minutes. 钫的最稳定的同位素, 钫 -223 也只有22分钟的半衰期.
• More reactive are the heavier isotopes of hydrogen, deuterium and tritium. 更为活跃的是氢的较重同位素, 氘和氚.
• Today many radioisotopes are produced using the particle accelerator called a cyclotron. 今天许多放射性同位素是用被称为回旋加速器的粒子加速器来制造的.
• A synthetic element produced in trace quantities by helium isotope bombardment of curium. 锎一种合成元素,由氦同位素轰击锔可得到微量的这种元素.
• Planar and SPECT cisternography revealed accumulation of the tracer near the skull base. 单光子计算机断层脑池造影图象显示颅底附近有同位素聚集证实有脑脊髓液渗漏.