An ester of acetic acid; used in fibers and fabrics; photographicfilms and varnishes.
一种乙酸酯，用于纤维、织物、照相胶卷和清漆中。
2
Silver halide are photosensitive materials extensively used as source materials in photographicfilms.
卤化银是一种光敏性极高的材料。
3
The X-Rite product line began with densitometers and sensitometers used to measure optical or photographic density and to expose photographicfilms to a standard reference.