"laser" is a device that converts energy into a laser beam. according to different application scenarios and laser wavelengths, it can be divided into industrial lasers, medical lasers, military lasers and other types. industrial lasers are widely used in metal cutting, welding, marking, engraving and other processing fields; medical lasers can be used in skin beauty, myopia correction, cataract surgery and other medical treatments; military lasers are used in military fields such as targeting,

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