软电离指在质谱分析中，离子源是将分子离解成离子或解离成碎片，在这里分子失去电子，生成带正电荷的分子离子。分子离子可进一步裂解，生成质量更小的碎片离子。
电喷雾质谱（ESI - MS）技术是一种软电离技术，其中主要是分子离子形成。
Electrospray ionization mass spectrometry(ESI- MS) is a soft ionization technique by which molecular ions are mainly formed.
随着1988年生物质谱相关软电离技术的发明和2001年人类基因组测序完成，蛋白质组学进入了高速发展期。
The development of biomass related ionization method in 1988 and the accomplishment of human genome sequencing in 2001 are major breakthrough for Proteomic study.
软X线稀有气体电离室作为软X线波段绝对探测器，是通过测量光电离子流得出光谱辐射强度。
The technique of soft X-ray ion chamber includes the measurement of the ion current as a function of rare gas pressure in the ion chamber.
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