The film can stop the ion feedback effectively and it is very important to lengthen the life of the image tube.

该膜能够有效地阻止离子反馈，对延长像管的寿命具有重要意义。

youdao

The film can stop the ion feedback effectively and it is very important to lengthen the life of the image tube.

该膜能够有效地阻止离子反馈，对延长像管的寿命具有重要意义。

youdao