And so in the mass spectrum, it doesn't matter if experts don't have to say in advance what molecule they are looking for.

因此，在质谱分析，专家无需事要寻找的分子。

This valuable information was  obtained from the CDA mass spectrum analysis of over 300 ice grains from the E-ring.

这些宝贵的信息来自E超过300颗冰粒的宇宙尘埃分析仪质量谱分析。

The instrument then separates the plasma components and analyzes the resulting mass  spectrum of the ions produced by the impacting dust particle.

然后该仪器分离等离子体成分，并分析由撞击尘埃粒子产生的离子的质量谱。