Ideally shaped cone cathodes have been successfully formed by using a two-step etching method.

提出了两步腐蚀的工艺方案，制成了形状理想的锥体阴极。

youdao

Ideally shaped cone cathodes have been successfully formed by using a two-step etching method.

提出了两步腐蚀的工艺方案，制成了形状理想的锥体阴极。

youdao