a measuring instrument for determining optical or photographic density
a measuring instrument for determining density or specific gravity
同义词:densimeter
densitometer详细解释
den.si.tom.e.ter
n.(名词) An apparatus for measuring the optical density of a material, such as a photographic negative. (光)密度计:测量材料,例如相片感光纸光密度的器械 See densimeter 参见 densimeter