他们甚至曾经有自己的阴极射线管制造厂以制造具有极高亮度的阴极射线管。

They even had their own factory for making ultra-bright and sharp CRT tubes.

youdao

他们甚至曾经有自己的阴极射线管制造厂以制造具有极高亮度的阴极射线管。

They even had their own factory for making ultra-bright and sharp CRT tubes.

youdao