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。
Copper Etching is an important step in the PCB production process.
蚀铜过程是生产线路板的一个关键步骤。
In addition, by utilizing the secondary wet type etching method, the manufacture process step is simpler, and the technical cost is decreased.
另外，化学湿式蚀刻的方式可以让制造工艺步骤更简单，技术成本降低。
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