laser beam divergence

laser beam divergence laser radiation when open AVOID DIRECT EXPOSURE TO BEAM laser 求幸村精市版laser beam邮箱：2251128043@qq.com,要MP3版.谢谢咯! 英语翻译高手 a watch that doubles as a laser-beam cutter 相对论 一架宇宙飞船以一半的光速飞行a spaceship moves at half the speed of light and shines one laser beam forward and another beam backward.As seen by an observer at rest,does the beam shining forward move faster than the one shining 英语翻译The tracking mechanism moves the lens system along the spiral tracks in which information is encoded,and the lens reads the information using a laser beam,which is focused on the CD and reflected back to sensor 【急求!】初一英语造句~!快~torch手电筒laser激光beam光线programme节目拜托了555百度词典查不到……分别……谢谢……【也就是4句】 英语习题10悬赏用以下单词填空moment/case/escape/search/silently/whispered/safety/freedom/ crew/ aimed/ towards/ interrupt/ per/ be done for/ snoring/panic/ attacked/ laser/ attract/ immediately/ beam/ figure/ snoring1.The hurricane 飓风 查询EI检索号好心人帮我查下“Beam Alignment in Laser Interference Nanolithography”是否被EI检索,有的话把检索信息贴出来.拜托了1去年12月份的会议投稿 beam led beam angle Beam me main beam, beam是什么意思? beam dwell “beam-iduced” 英语翻译A light screen device for measuring the velocity of a projectile comprising a laser disposed opposite to one end of a first plane reflecting mirror and inclined with respect thereto to cause a laser beam to strike the first plane reflecti