选择腐蚀 meaning in Chinese

differentiate etching
selective corrosion
selective etching

For example , when the gaas substrate is etched by h2so4 - h2o2 , h2o2 is adopted to oxidate the substrate first , then the substrate was etched by means of laser wet etching in h2so4 solvent . theoretical analysis and experimental results show that compared with the mixed - solvent - etching , more smooth etched surface can be obtained by this method ; and because the substrate is preprocessed , time of laser induced wet - chemical etching
理论分析和实验结果都表明,次序选择腐蚀法可以有效地提高腐蚀表面的均匀性;因先对基片进行化学腐蚀处理,大大缩短了激光化学腐蚀的时间;使溶剂先后分别作用于基片,可以提高激光化学腐蚀溶剂配比的精度容差,使激光化学腐蚀控制和分析更加简单。
Theoretical analysis and experimental results show that the mentioned methods above can simplify the process condition , improve the etched effect , shorten the etching time and obtain more even etched surface . 2 ) laser - assisted wet sequencially - selective - etching method has been developed this method can be applied when the corrosion solution is mixed solvent
2 )提出了激光化学诱导液相次序选择腐蚀法该方法适用于腐蚀液为混合溶剂的情况,例如, h2so4 - h2o2对gaas基片进行腐蚀时,先采用h2o2对基片进行氧化腐蚀处理,再利用h2so4进行激光化学腐蚀。