A low-pressure mercury vapor discharge lamp is operable in a first mode of operation ('normal mode') and a second mode of operation ('emergency operation').
低压汞汽放电灯操作在第一操作模式（“正常模式”）和第二操作模式（“紧 急操作”）下。
2
Applied to the exposure light source are:contains a lot of UV metal halogen lamp, high pressure mercury vaporlamp and so on;
应用于曝光的光源有：含有大量紫外线金属卤素灯、高压水银灯等；
3
Suitable for incandescent lamp, mercury vaporlamp, high-pressure sodium vaporlamp, metal halide lamp.