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实际教学中对铜与浓硝酸反应实验改进,使其更加方便、环保,现象明显,并能激发学生学习的兴趣和思考问题的能力。
In the actual teaching, the experiment of improving the reaction between copper and concentrated nitric acid has made it more convenient and environmentally friendly. The phenomenon is obvious, and it can stimulate students’ interest in learning and ability to think about problems.