此仪器可用于气体分析以及轻元素的同位素丰度测定。
This instrument can be used for gas analysis and determine of isotopic abundance of light elements.
本文推导出氧质谱峰高之间的关系和计算氧同位素丰度的公式。
In this paper, formulas for relationship among oxygen mass spectra peak heights and for calculating oxygen isotope abundance are drived.
每当测定非常低的浓度和同位素丰度时总是首先使用无机质谱法。
Spectrometry is preferably used each time extremely low concentrations and isotopic abundance are to be determined.
每当测定非常低的浓度和同位素丰度时总是首先使用无机质谱法。
Inorganic Mass Spectrometry is preferably used each time extremely low concentrations and isotopic abundance are to be determined.
用热表面离子源测定了锂同位素丰度，在样品全耗尽过程中累计离子流强度。
The isotopic ratio of lithium was determined by cumulating intensity of ion current during evaporation of all samples on evaporation filament.
对于给定的校准标准计算出相对同位素丰度和相应于该丰度的同位素的实际的质量位置。
Relative isotope abundances and actual mass locations of isotopes corresponding thereto are calculated for the given calibration standard.
在计算出的相对同位素丰度与质谱目标峰形状函数之间执行卷积运算，以形成计算的同位素峰集群数据。
Convolution operations are performed between the calculated relative isotope abundances and the mass spectral target peak shape functions to form calculated isotope peak cluster data.
对另外两种静电场方法，计算了不同外加电压、不同的初始原子密度和不同的目标同位素丰度等条件下的离子引出情况。
For the other two methods, the ion extraction characteristics were computed for various conditions such as applied voltage, initial atom density and abundance of the aimed isotope.
物质中不同核同位素的相对丰度能够提供更多的线索。
The relative abundance of different nuclear isotopes in the material could reveal additional clues.
该方法巩固了对于我在能量和营养流的研究，并结合了自然丰度和浓缩同位素跟踪技法。
This approach underpins much of my research on energy and nutrient flux, and has involved both natural abundance and enriched isotope tracing techniques.
在质谱测量中，低丰度236u同位素容易受到周围强峰拖尾的干扰。
The low abundance isotope 236u is easily disturbed by strong peak tails in the measurement of Mass Spectrometry.
求出了丰度方程的近似解，从而计算得到热扩散级联的长度及同位素浓缩产品的丰度。
The solutions of the differential equations are calculated, through which the length of thermal diffusion cascade and the abundance of isotope products are calculated.
并从矿石物质成分、典型矿物组合、同位素组成、稀土元素丰度型式，以及矿化分布和相关分析等方面、探讨了成岩成矿的物质来源及成因问题。
An approach has been made to the ore genesis from the ore composition, the typical mineral assemblage, the mineral geological thermometer, the K-Ar isotopic age, the sulfur iso - topic dat...
并从矿石物质成分、典型矿物组合、同位素组成、稀土元素丰度型式，以及矿化分布和相关分析等方面、探讨了成岩成矿的物质来源及成因问题。
An approach has been made to the ore genesis from the ore composition, the typical mineral assemblage, the mineral geological thermometer, the K-Ar isotopic age, the sulfur iso - top...
并从矿石物质成分、典型矿物组合、同位素组成、稀土元素丰度型式，以及矿化分布和相关分析等方面、探讨了成岩成矿的物质来源及成因问题。
An approach has been made to the ore genesis from the ore composition, the typical mineral assemblage, the mineral geological thermometer, the K-Ar isotopic age, the sulfur is...
并从矿石物质成分、典型矿物组合、同位素组成、稀土元素丰度型式，以及矿化分布和相关分析等方面、探讨了成岩成矿的物质来源及成因问题。
An approach has been made to the ore genesis from the ore composition, the typical mineral assemblage, the mineral geological thermometer, the K-Ar isotopic age, the sulfur is...
应用推荐