densitometer的例句（densitometer在句子中的用法）

• Densitometer is an apparatus used for measuring photosensitivity of films. 光学密度计是一种测量胶片感光性能的专用仪器.
• The zero point of the density scale is defined by having no specimen in the densitometer. 定义密度计内设有样品时的密度为密度尺标的零点.
• 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.