单词：efficient sound signal
单词：efficient sound signal 相关文章
A Story Happened on An Uninhabited Island The only survivor of a shipwreck was washed up on a small, uninhabited island. He prayed feverishly for God to rescue him, and every day he scanned the horizon for help, but none seemed forthcoming. Exhausted
英语美文
A Story Happened on An Uninhabited Island The only survivor of a shipwreck was washed up on a small, uninhabited island. He prayed feverishly for God to rescue him, and every day he scanned the horizon for help, but none seemed forthcoming. Exhausted
英语美文
But heres a mystery: When you press pause on the VCR, the screen doesnt go blank. Instead, you get a frozen image. Remember, you need a changing magnetic signal to create even a still video image. If the video tape isnt moving, where is this changing
英语时差8，16
Although audio tapes and video tapes look different, theyre based on the same principles. Each has a roll of magnetic material which slides past the so-called playback head in the VCR or cassette deck (cassette decks have one playback head, VCRs have
英语时差8，16
How Your VCR holds a Note VCR-盒式磁带录像机VCR是Video Cassette Recorder的缩写盒式磁带录像机。就功能上而言，它是使用空白录像带并加载录像机进行影像的录制及存储的监控系统设备。VCR作为许多晚会
英语听力文摘 English Digest