developed through many experiments
developed through many experiments
经过多次实验
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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In this article, an improved simple and fast RNA extraction method was developed through many experiments.
本文介绍经过反复实验后改进的棉花rna的提取方法，它具有快速、简单等特点。
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