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实验是学习的一大手段,通过实验可以逐步掌握实验的基本操作技能;学会观察实验的方法;能够根据实验现象说明物质的性质和变
Experiment is a great tool for learning. Through experiments, you can gradually master the basic operating skills of the experiment; learn how to observe the experiment; and explain the nature and change of the material according to the experimental phenomena.