These electrons cannot pass into the phototube because of the insulation on the metal plate.

由于金属板上的绝缘层,这些电子并不能进入电光管.

辞典例句

The phototube, a very special type of electron tube, is the heart of the talking - picture projector.

光电管, 一种非常特殊的电子管, 是有声电影放映机的心脏.

辞典例句

Physics A device, such as a phototube, used to enhance or increase an effect.

扩(量)程器:一种用来加强或者增加效果的仪器, 比如光电管.

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