direct ionization from ground state 基态直接电离
direct chemical ionization GC-MS 直接化学离子化
direct chemical ionization 直接化学电离
direct current plasma ionization detector 直流等离子体离子化检测器
The interferences between direct and exchange amplitudes make important contribution in the process of ionization.
电离过程中直接电离与交换电离振幅的干涉有重要的贡献。
The qualitative analysis of N polyaromatics in heavy oil was made by a double adsorption separation followed by the application of low voltage ionization and high resolution MS direct sampling.
通过两次吸附分离，然后采用低压电离，高分辨质谱直接进样技术对重馏份油中的含氮多环芳烃进行定性测定。
Three types of direct current plasma ionization detectors (HeDCPID) for gas chromatography have been developed.
报道三种不同类型的气相色谱用氦直流等离子体离子化检测器。
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