The result of the calculation shows that the gun has the function of dynamic focus,and dynamic focus voltage is depress.The performance of the gun is well improved.

• 结果表明屏边角的光点形貌有了很大改善，动态聚焦电压得到了很大降低，表明了该改进枪具有一定的动态聚焦作用，枪的性能有了很大的提高。