меланхолия Модернизиране захар friction pom steel забележителен научен текст
Investigating the Influence of Friction and Material Wear on Triboelectric Charge Transfer in Metal–Polymer Contacts | SpringerLink
Variation of the friction coefficient of 316L against PTFE, CFRPAI,... | Download Scientific Diagram
Static friction coefficient of some plastics against steel and aluminum under different contact conditions - ScienceDirect
Coefficient of friction vs. time for POM, POM/CNF, POM/PU and POM/PU/CNF | Download Scientific Diagram
Cell Phone POM and Stainless Steel Rotating Friction Hinge Smh-40143 - China Cell Phone Rotating Friction Hinge, Friction Hinge for Cell Phon | Made-in-China.com