无线电比较器（测量电磁强度仪器）

脆性材料抗拉强度测试仪

brittle materials tensile-strength tester

光度计用来测量光的性质、尤其是光的强度和通量的仪器

An instrument for measuring a property of light, especially luminous intensity or flux.

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

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.