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Ofallthethingselectronicsdoestelevisionseemsthemostmagical.Withtelevisionwecanseeacro...
Of all the things electronics does television seems the most magical. With television we can see across space. (56) We can sit in our homes and watch things far away from us as they happen.
Television is a system for transmitting moving pictures over long distances by means of radio. In some respects television and radio are alike. In radio sound is changed into a series of electrical impulses. (57) In television it is the picture that is changed from a light image to a series of electrical impulses (脉冲). This is done in the television camera. (58) A television camera looks something like a movie camera from the outside, but there is no film in it. (59) Instead of being recorded on film, the picture enters the camera and is change d into electricity. It is broadcast, picked up by your television receiver, amplified, turned back into light again and you see it at last as a picture on the screen. (60) All this happens so fast that you see the picture and hear the sound at the very moment they are being broadcast. 展开
Television is a system for transmitting moving pictures over long distances by means of radio. In some respects television and radio are alike. In radio sound is changed into a series of electrical impulses. (57) In television it is the picture that is changed from a light image to a series of electrical impulses (脉冲). This is done in the television camera. (58) A television camera looks something like a movie camera from the outside, but there is no film in it. (59) Instead of being recorded on film, the picture enters the camera and is change d into electricity. It is broadcast, picked up by your television receiver, amplified, turned back into light again and you see it at last as a picture on the screen. (60) All this happens so fast that you see the picture and hear the sound at the very moment they are being broadcast. 展开
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在所有的电子产品中电视似乎是最神奇的。通过电视我们可以看到另一面的空间,我们可以坐在家里,看到很远的地方正在发生的事。
电视是一个通过无线电发送的方式将活动图像长距离的传导的系统。在某些方面电视和收音机十分相似。
电视上的图像是把一张光图像变成一系列的电子脉冲。这也应用到电视摄像机中,一台电视摄像机从外表看有些地方像一台电影摄像机,但其中并没有电影。而是用来录制电影,图像进入摄影机中,并变成电信号,那是信号,由你的电视接收机接收。并增强,并再次成为光束。最后你将会在屏幕上看到它。
所有这一切发生得太快了,你看到的图片和听到声音的那一刻,他们就正在播出了。
电视是一个通过无线电发送的方式将活动图像长距离的传导的系统。在某些方面电视和收音机十分相似。
电视上的图像是把一张光图像变成一系列的电子脉冲。这也应用到电视摄像机中,一台电视摄像机从外表看有些地方像一台电影摄像机,但其中并没有电影。而是用来录制电影,图像进入摄影机中,并变成电信号,那是信号,由你的电视接收机接收。并增强,并再次成为光束。最后你将会在屏幕上看到它。
所有这一切发生得太快了,你看到的图片和听到声音的那一刻,他们就正在播出了。
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所有电子产品中电视似乎是最神奇的。通过电视,我们可以穿过任何空间。 ( 56 ) ,我们可以坐在家里,看离我们很远的正在发生的事情。
电视是一个通过广播长距离传递活动图像的系统。在某些方面,电视和电台都是一样的。在广播电台的声音变成了一系列的电脉冲。 ( 57 )电视中它的图片是由一些轻型形象进行了一系列的电脉冲(脉冲) 。这是在电视摄像机中完成的。
( 58 )电视摄像机看起来就像电影摄影机,但里面没有电影。 ( 59 )代替记录电影,图片进入相机是改变d转化为电能。这是广播,被你的电视接收,扩增,
在回去,你终于能看到图像在屏幕上。 ( 60 )所有这一切发生得太快了,你看到的图片和听到声音的那一刻,他们正在播出。
电视是一个通过广播长距离传递活动图像的系统。在某些方面,电视和电台都是一样的。在广播电台的声音变成了一系列的电脉冲。 ( 57 )电视中它的图片是由一些轻型形象进行了一系列的电脉冲(脉冲) 。这是在电视摄像机中完成的。
( 58 )电视摄像机看起来就像电影摄影机,但里面没有电影。 ( 59 )代替记录电影,图片进入相机是改变d转化为电能。这是广播,被你的电视接收,扩增,
在回去,你终于能看到图像在屏幕上。 ( 60 )所有这一切发生得太快了,你看到的图片和听到声音的那一刻,他们正在播出。
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