blended sand是什么意思

用法例句

Thie paper describes the abrasive trimming, pulse voltage trimming and laser trimming technologies for thick film and their evolutions.

介绍了厚膜电阻常用的喷砂微调和脉冲电压微调、激光微调三种微调技术及其发展趋势,重点介绍了激光微调机理、调阻方式以及微调图形分类。