大屏幕玻璃显象管,抽真空后,产生了内外压力差。47公分对角线的显象管,屏面要承受三个以上的大气压。虽然在玻壳设计上,安全因素已考虑,玻壳强度是满足的,但是,显象管在应用时,在万一的外部因素影响下,致使管子炸裂是有可能的。炸裂原因,玻壳在大气压作用下,局部碰伤,产生裂纹而疲劳,但又来不及补偿玻壳内 Large-screen glass kinescope, after vacuuming, resulting in internal and external pressure difference. 47 cm diagonal tube, the screen to withstand more than three atmospheres. Although the design of the glass bulb, the safety factor has been considered, the strength of the glass bulb is satisfied, however, it is possible that the CRT will explode under the influence of external factors in application. Bursting reasons, the glass under the action of atmospheric pressure, local bumps, cracks and fatigue, but too late to compensate within the glass