机械波和机械振动虽然是选修内容,但每年高考对于3-4的选考内容几乎是必考内容,尤其振动图像和波动图像是考查的一个热点,因此掌握好这两类图像很关键。对于很多学生来说,不能正确解答这类问题的关键原因在于没有深刻理解这两类图像的区别和联系。本文通过对两类图像的辨析和经典例题的讨论来帮助学生很好地掌握这类试题。 Although mechanical wave and mechanical vibration are optional contents, each year, college entrance examination for the 3-4 exam content is almost required content, in particular, vibration images and fluctuations in the image is a hot test, so master these two types of images is the key. For many students, the key reason for not answering such questions correctly is the lack of a deep understanding of the differences and connections between the two types of images. In this paper, two kinds of image discrimination and classic examples of the discussion to help students a good grasp of such questions.