电镀铜是PCB加工过程中的一个关键工艺流程，涉及到孔和板面金属化的性能保证，影响因素众多。
The plating copper is a key process in the production of PCB, which involves the quality assurance of metallization of PTH holes and laminate surface, and is affected by a number of factors.
在众多研究影响修正输出的因素中，很少有研究涉及到语言水平对修正输出的影响。
Among many factors affecting modified output, few studies have been concerned with the effect of language proficiency on modified output.
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