国产日产久久高清欧美_日韩a片无码一区二区五区电影_亚洲乱码av中文一区二区_av在线播放天堂_激情丁香网_国产成人精品一区二区不卡_免费观看视频在线_国产精品国产三级国产aⅴ9色_4hu亚洲人成人无码网www电影首页_99福利在线观看_国产午夜福利在线观看视频_久久天堂亚洲_国产大学生av_先锋影音色_色视频欧美一区二区三区_精品视频一区二区三区_成人免费看片_黄色av一区二区三区_第四色激情_亚洲午夜无码久久

Laser technology is known as one of the four major technological innovations of the 20th century, alongside atomic energy, semiconductors, and computers. The excellent characteristics of lasers, including their distinct monochromaticity, excellent coherence, and clear directionality, enable them to concentrate huge energy densities in extremely small areas, thus demonstrating enormous potential for application in the field of material processing. Since the birth of the world's first laser in 1960, laser technology has become a new favorite in the technology industry. In the 1970s and 1980s, laser marking technology, an emerging field of laser applications, emerged internationally and quickly received a warm response from the market, becoming an indispensable part of the laser processing industry.