| 释义 |
photographic density ˌfəʊtəˈgræfɪkˈdensiti 短语¹⁴⁴⁹⁷²⁺²
基本英英近义反义例句
摄影密度,照相密度,照相底片密度,底片黑度
Noun:
physics a measure of the extent to which a substance transmits light or other electromagnetic radiation近义词 absorbance吸收率transmission density透射浓度optical density光学深度,吸收度,光密度…
For areas where the film density through the weld varies by more than from the density through the penetrameter, an additional penetrameter shall be used for those areas.当焊缝区域底片黑度变化超过透度计处黑度时，应在该处另加透度计。 |