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前言在讲述这种新型象增强器之前,先讨论一下经典的电子光学系统设计的局限性可能是有益的。在通常的大多数象管中,其电子光学
Preface Before discussing this new type of image intensifier, it may be helpful to discuss the limitations of classical electronic-optical system design. In most common image tubes, its electro-optic