Figure 12.
Comparison of 3D microscopic images of the polyurethane belt surface (a) with the used PU belt surface (b) (50× magnification).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.