A double casing sealed structure is used in the ionization chamber with thin Windows of large diameter.
电离室采用大口径双重密封结构，制作工艺难度大，要求高。
2
Based on the signal-power dependence measurement for the normal and anomalous lines, a double resonance and collision Ionization model is suggested to elucidate the intensity anomaly.
提出了双共振及碰撞电离模型，以解释实验中出现的强度反常谱线。
3
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.