彩色电视自问世以来、其发展远不及黑白电视那样迅速和普通,而是相当缓慢。其主要原因是由于获得彩色图象的器件(彩色显象管)相当复杂且价格昂贵。目前大家么认的,性能良好的彩色显象管是荫罩型和影条极型彩色显象管。图1绘出这两 Since the advent of color television, its development is far less rapid and common than black and white television, but rather slow. The main reason is due to the fact that the color image acquisition device (color picture tube) is quite complicated and expensive. At present, we recognize that good performance color CRT is a shadow mask type and color cathode ray tube. Figure 1 plots these two