英汉词典

1.One type is the iconoscope . it contains three essential parts - - a mosaic , a collector ring and an electron gun.

一种是光电摄象管，它有三个基本部件- -嵌镶光电阳极、集电环和电子枪。

2.One type is the iconoscope . it contains three essential parts - - a mosaic , a collector ring and an electron gun.

一种是光电摄象管，它有三个基本部件- -嵌镶光电阳极、集电环和电子枪。