Finally, the HD formats of digital TV have a different aspect ratio than analog TVs. An analog TV has a 4:3 aspect ratio, meaning that the screen is 4 units wide and 3 units high.
最后，高清格式(16：9)具有和模拟电视(4：3)不同的宽高比。
Finally, the HD formats of digital TV have a different aspect ratio than analog TVs. An analog TV has a 4:3 aspect ratio, meaning that the screen is 4 units wide and 3 units high.
最后，高清格式(16：9)具有和模拟电视(4：3)不同的宽高比。
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