当然, 激光既可以是连续波,也可以是脉冲的形式.Laser light is, of course, available as a continuous wave or in the form of pulses.本文报导一种连续波氩离子 激光泵浦 的掺钛蓝宝石激光器.A continuous wave titanium - doped sapphire laser pumped by argon laser is :'rep...
他收录自世界各地的合唱音乐集取名为《声音》。His collection of choral music from around the world is called "Voices".围在钢琴边来个合唱怎么样？How about a nice sing-along around the piano?他们合唱时嗓音非常和谐.Their voices blend marvellously as they sing in chorus....