The setup densitometer lamp must be replaced.

设定用浓度计的灯泡必须更换。

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。

Densitometer is an apparatus used for measuring photosensitivity of films.

密度计是一种测量胶片感光性能的专用仪器。