... 双聚焦 double focusing◇双聚焦质谱仪 double-focusing mass-spectrograph; double focusing massspectrometer 脉冲聚焦飞行时间质谱仪 impulse-focused time-of-flight ma ectrometer; impulse-focused time-of-flight mass spectro-meter; impulse-focused time-of-flight mass spectrometer 二级双聚焦 secondary-order double focusing ...
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