chemical function materials
optical function materials
automotive friction materials
Braking friction materials
Cu-based friction materials
Fe-Cu based friction materials
internal friction materials
powder metallurgy friction materials
test bench of friction materials
Analgesia function and anti-inflammation function
liver function and kidney function
Liver function renal function
step function and hurdle function
friction pressfriction-screw press Friction sawing
materials saving and the utilize of materials
replacement of thin materials by thick materials