double-focusing mass spectroscope
double-dry calorimeter,双干式热量计 double-focusing mass spectroscope,双聚焦质谱仪器 double-focus X-ray tube,双焦点X射线管 ..
focusing mass spectroscope
... double-dry calorimeter,双干式热量计 double-focusing mass spectroscope,双聚焦质谱仪器 double-focus X-ray tube,双焦点X射线管 ...