相隔七年的黑白显象管全国质量评比,通过检测和数据处理,获得了满意的结果。一、逐年提高的质量水平 1.较高的质量水平参加这次评比的21个生产厂,两种屏幕尺寸的管子共28批。评比结果,获得一等奖的有18批,占总批数的64.3％。其中44厘米管子有9批,占本管种的69％;35厘米的管子也有9批,占 After seven years of black and white picture tube national quality appraisal, through the detection and data processing, obtained satisfactory results. First, the quality level increased year by year A higher quality level Participate in the competition of the 21 production plants, a total of 28 batches of two screen-size tubes. The results of the competition, the first prize of 18 batches, accounting for 64.3% of the total lot. Among them, there are 9 batches of 44 cm tubes, accounting for 69% of the tube types; 9 batches of 35 cm tubes also account for