作业帮英译：The very heart of a TV is the picture tube.It is a cathode-ray tube with an electron gun and a phosphor screen inside the evacuated glass envelope.
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英译：The very heart of a TV is the picture tube.It is a cathode-ray tube with an electron gun and a phosphor screen inside the evacuated glass envelope.
英译：The very heart of a TV is the picture tube.
It is a cathode-ray tube with an electron gun and a phosphor screen inside the evacuated glass envelope.
英译：The very heart of a TV is the picture tube.It is a cathode-ray tube with an electron gun and a phosphor screen inside the evacuated glass envelope.
电视的核心就是显像管
显像管阴极射线管,在玻璃壳（qiao）里装有电子节流器和磷光屏.
the heart of the
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in the heart of hearts