单词：etching pit
etching pit的用法和样例：
例句
- The ice etching method was adapted to duplicate the form of grains in microvilli membrane.采用冰冻蚀刻法复制微绒毛膜膜内粒子形态。
- With the continuousgrowth of electronic technology, photochemical etching tech-nology has expanded into many new application fields and aproduction scale is formed.介绍了光化蚀刻的由来和传统工艺流程中五种掩膜的制作方法及四种现代的光化蚀刻法流程及其应用范围。
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