The results show that, with an increasing internal pressure, non-circularity of the tube decreases, and the tendency of thickness thinning on inner and out side of the tube increases.

Scientists compared the walking gaits of 60 babies who were either naked, wore a thin disposable diaper or a thick cloth diaper.

Reasonable down from feeding mechanism to ensure that does not wrinkle when sewing thin, continuous line when the seam thickness.