high-vacuum television tube

例句：

1. 1.The high-vacuum television tube is the key component of the TV set.
   高真空管电视是电视机的关键部件。
2. 2.In the high-vacuum television tube, electrons are accelerated by an electric field.
   在高真空管中，电子由电场加速。
3. 3.The high-vacuum television tube technology has greatly improved the picture quality of the TV set.
   高真空管电视技术大大提高了电视机的画面质量。