fig4
![A review of worm-like pipe inspection robots: research, trends and challenges](https://image.oaes.cc/45cb79a3-ca20-48c6-84be-de7a41b35aff/ss3049.fig.4.jpg)
Figure 4. Graphic explaining the terms used to define the wave motion in peristaltic motion. Here, Wavelength = 4, Propagation
Figure 4. Graphic explaining the terms used to define the wave motion in peristaltic motion. Here, Wavelength = 4, Propagation
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