单词：single mode algaas injection laser
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VOICE ONE: Welcome to THIS IS AMERICA in VOA Special English. I'm Faith Lapidus. VOICE TWO: 2008 Nuyorican National Slam Team And I'm Steve Ember. This week on our program, we go to New York City to visit the thirty-five year old Nuyorican Poet's Ca
VOA慢速英语2009年（四）月
Video Shows Man Believed to be Last of Amazon Tribe Brazils Indian Foundation has released a video that shows images of a man believed to be the last surviving member of his tribe. No one knows the mans name or that of his tribe. It appears he has li
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This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Whether it's for streaming Netflix or sharing files, we're gobbling up more and more dataand we want it faster. But even shooting data with lasers over fiber-o
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Multimode Optical Fiber(S) Multimode fibers, with much wider cores than single mode fibers, allow light to enter at various angles, and reflect (bounce off of) core-clad boundaries as electromagnetic
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中文 英文 缩写 单（点）播 unicast 单板 board/card 单边测试 one-sided test 单边带 Single Side Band SSB 单边带调制 single sideband modulation 单边带自适应差分 single ban
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Whale Deaths On the Rise in Alaska 阿拉斯加鲸鱼死亡数量有所上升 American scientists have reported a sharp increase in the number of dead whales found in the Gulf of Alaska. From May through August, 30 whales washed up along the coast of
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