contact etching

例句：

1. 1. The process ofcontact etching is crucial for the productionof micro-electronic devices.
   接触蚀刻过程对于微电子器件的生产至关重要。
2. 2.The contact etching technique has been widelyused in the manufacturing of semiconductors.
   接触蚀刻技术在半导体制造中得到了广泛应用。
3. 3. The contact etching process requires precisecontrol over the chemical composition and concentration ofthe etch solution.
   接触蚀刻过程需要精确控制蚀刻溶液的化学组成和浓度。