袖珍电视机发明出来了.我们渴望已久的这种书本形电视机是1时厚,内有一张宽2时“照片形屏幕”.一、二年后,一种厚度相当于袖珍计算机的电视机即将问世.将电视机制造得那么薄——屏幕宽1.5时——的确花了很大代价.再过几年有致望把这种袖珍电视机的屏幕做得更大些.制造薄型袖珍电视机的关键问题在于显像管后部那个好比瓶颈的凸出部分;这就是电子枪.正是这个电子枪对着前面的屏幕发出射线,随着射线的发光而显现出图像. The pocket-sized television set was invented, and our long-awaited book-shaped television set was 1 hour thick with a 2 “wide photo screen.” One or two years later, Of TV sets are coming in. Making the TV so thin - a screen with a width of 1.5 - does cost a fortune - and in a few years there is hope to make the screen of this pocket TV bigger. The key issue with pocket-sized televisions lies in the rear of the picture tube, which is like the bulging part of the bottleneck; this is the electron gun, which emits the radiation toward the front screen, revealing the image as the beam glows.