laser的全称
Light Amplification by Stimulated Emission of Radiation
翻译:受激辐射式光频放大器
Any of several devices that convert incident electromagnetic radiation of mixed frequencies to one or more discrete frequencies of highly amplified and coherent ultraviolet, visible, or infrared radiation.
激光器：使偶然的混杂频率的电磁辐射,变为一个或更多的高度强化和连续的紫外线、可见光或红外线辐射的分离频率仪器中的一种
A device whose output is in an invisible region of the electromagnetic spectrum.
激光装置：把信号输入于电磁光谱不可见区域的一种装置