“密度计”的英语？

质量流量的数据可借助于密度计而获得.Mass flow information can be secured by using a densitometer.定义密度计内设有样品时的密度为密度尺标的零点.The zero point of the density scale is defined by having no specimen in the densitometer.光学密度计是一种测量胶片感光性能的专用仪器.Densito...