首先通过观察实验发现在同一种紫外光分别照射真假币荧光标记时，反射光的颜色不同。
Different color of reflected light can be observed in experiments, when the same kind of ultraviolet light respectively irradiates the fluorescent mark of true and false currency.
信息记录装置通过对记录媒体照射激光以形成与记录信号对应的记录标记来记录信息。
The information recording device can form recording marks corresponding to the recording signals by irradiating laser for the recorded medium so as to record the information.
应用推荐