紫外荧光法检验激光打印文字朱墨时序
王少仿1,2

Determination of Crossing Sequences Between Laser Printed Text and Seal Impression by Ultraviolet Fluorescence
WANG Shaofang1,2
两种长通滤色片的检验情况.a“长通滤色片”为“可见”;b“长通滤色片”为“OG530”.