The roller-scraper tribosystem of automatic teller machine(ATM) plays an important role in reliable cash requests.However,the abrasive wear of the polymer tribo
Finger seal is a new technology developed for gas path sealing in gas turbine engine.It has been paid attention to its good sealing performance and lower manufa
The existence of coupling makes the parallel mechanism possess some special advantages over the serial mechanism, while it is just the coupling that brings abou