采用理论教学与实验演示相结合的教学模式，可以使学生的学习过程有一个从理论到实践，从抽象到形象的思维过程，从而产生良好的教学效果。

Theory teaching and experiment demonstration should be used together to make students follow the course from theory to practice, from abstract to substance, thus to achieve perfect teaching effect.

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