The second type of instrument is a reflex densitometer .
第二栽仪器是不正射密度计。
Mass flow information can be secured by using a densitometer.
质量流量的数据可借助于密度计而获得。
The setup densitometer lamp is too weak. prepare for replacement.
设定用浓度计的灯泡已太弱，准备更换。
The setup densitometer lamp is too weak. prepare for replacement.
设定用浓度计的灯泡已太弱，准备更换。
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