英语释义

1. the spectrum of a stream of gaseous ions separated according to their differing mass and charge

2. the spectrum of a stream of gaseous ions separated according to their mass and charge

片语

mass spectra technique质谱分析技术

voltage scanning mass spectra质谱的电压扫描

Mass Spectra and Isotopes质谱与同位素

mass spectrogram[光] 质谱图；质谱

Mass spectra of photoproducts产物的质谱分析

Secondary Ion Mass Spectra二次离子质谱仪

parabola mass spectra抛物线质谱

英汉例句

• therefore, mass spectra gained by these three ionization modes are satisfactorily used to analyse liquid crystals.

  三种质谱并用，能有效地测试液晶化合物。

• mass spectra (ms) of cholesterol esters and halides were obtained by means of electron impact (ei), field desorption (fd) and chemical ionization (ci).

  研究了胆甾醇酯类和胆甾醇卤代物的电子轰击电离（ei）、场解吸电离（fd）、化学电离（ci）的质谱。

• their a max of uv spectra and fluorescence spectra, fluorescence quantum yields, as well as laser conversion efficiency are taken. their ir and mass spectra are also recorded.

  测定了它们的红外光谱、质谱、紫外光谱、荧光光谱、荧光量子产率和激光转换效率。

• in the present work the ei mass spectra of cis. trans-4-trimethylsilylcyclohexyl alcohol analogues and their derivatives have been reported firstly.

  本文首次报道了一系列顺，反-4-三甲（代）甲硅烷基环己醇类似物及其衍生物的电子轰击（ei）质谱。

• a dynamic method is used to describe the fragmentation rules, and the program can predict mass spectra automatically for compounds of various kinds of structures.

  程序采用动态描述方法存储裂解规则，可自动进行各种结构类型化合物的质谱预测。

• using moderate resolution capabilities of a desk time-of-flight instrument, the fragmentation regularity from electron impact mass spectra of cilnidipine is reported.

  利用台式飞行时间质谱的中分辨本领，报道了西尼地平的电子轰击质谱的裂解规律，对裂解途径进行了完全的指认。

• in the light of the interpretation of mass spectra of cyclic sulfoxides and the character of the strongest peak of pso3e mass spectra, pso3e were a series five-membered cyclic sulfoxides.

  按照环状亚砜的质谱裂解机理和pso3e质谱图中最强峰的质荷比特征，推断pso3e是五元环亚砜。

• the hydrogen, helium, nitrogen and argon beams thus produced were analyzed and their mass spectra were measured.

  并对氢、氦、氮、氩等气体产生的离子束进行了磁分析，测定了离子束的质谱。

• the fast atom bombardment and electron ionization mass spectra of diisopropylphosphoryl protected amino acids showed similar fragmentation pathways, in which elimination of neutral mols .

  二异丙基磷酰基氨基酸的快原子轰击和电子电离质谱都有相似的丢失两分子丙烯和一分子甲酸的碎裂过程。

• mass spectra of proteins such as ribonuclease a and lysozyme were obtained with substantially enhanced abundant peaks of low charge states.

  采用核糖核酸a、溶菌酶等样品和商品化的线性离子阱质谱仪对该电离源进行了表征。

• the features of field desorption mass spectra and its application in the analysis of thermolabile substances and nonvolatile compounds are described.

  本文简述了场解吸质谱的特点，以及在热不稳定化合物和难挥发化合物的分析中的应用。

• methods: absorbite was used to absorb mtbe. sample was desorbed by cs2, separated by ffap resilience quartz capillary column and detected with mass spectra sim.

  空气中mtbe用活性碳管吸附采集，二硫化碳解吸，ffap弹性石英毛细管柱分离，质谱sim方式检测。

• in this paper, formulas for relationship among oxygen mass spectra peak heights and for calculating oxygen isotope abundance are drived.

  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。

• with electron ionization (ei) mass spectra and metastable ion measurement, a study of fragmentation of n-2-styrylphthalamide and its derivatives are described in this paper.

  本文通过电子轰击（ei）质谱和亚稳跃迁测定，对n-2-苯乙烯基和取代n-2-苯乙烯基的一系列化合物的裂解过程进行了研究。

• the ms fragmentation law of color couplers have been established by analyzing the mass spectra of such compounds and a method for analyzing the structures of co…

  通过谱图解析找出了成色剂化合物的质谱碎裂规律；归纳出了利用质谱分析成色剂结构的方法。

• the mass spectra were interpreted mainly by comparing the fragments of six compounds, and their fragmentation patterns were proposed.

  探讨该化合物的质谱特征离子与裂解途径，提供莽草酸的质谱学基础。

• the fast atom bombardment (fab) mass spectra of free bile acids and their succinyl derivatives are described.

  本文研究游离胆汁酸及其丁二酸衍生物的快速原子轰击（fab）质谱。

• mass spectra of four new kinds of 21 1,2,4—triazines were reported and analysed.

  本文对合成的四种新类型21个1，2，4—三嗪类化合物的质谱进行了研究。

• the result shows that ei fragmentation process of cholesterol esters is determined mostly by the steroid nucleus, and there is almost no difference among the mass spectra of various compounds.

  结果表明：胆甾醇酯的ei质谱裂解途径主要由甾环决定，各化合物谱图之间几乎无差别；

• their thin-layer chromatogram, fluorescent spectra and fast atom bombardment mass spectra were examined to verify the completeness of the reaction and also to assign the structures.

  用硅胶薄层色谱、荧光光谱及快原子轰击质谱证实反应物的完全性及其结构。

• hidden age messages of pyrolysis mass spectra data of lacquer film by cluster analysis method were investigated and discussed. the stability of experimental factor influenced on analysis result.

  本文同时还用聚类分析法研究了漆膜裂解质谱数据隐含的年代信息，并讨论了实验条件的稳定性对解析结果的影响。

• chemistry on l, 2,4—triazines xviii. mass spectra of 1,2,4—triazines;

  三嗪类化合物的研究ⅹⅷ。——1，2，4—三嗪类化合物的质谱研究。