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介绍了一台用于航天器推进剂泄漏检测的便携式小型质谱检测仪，详细阐述了仪器的设计、结构及特性，给出仪器的性能实验结果及卫星的推进剂的检测实例。
A portable miniature MS detector for spacecraft propellant leak detection is introduced. The design, structure and characteristics of the device are described in detail. The experimental results of the performance of the instrument and the detection examples of the satellite propellant are given.