发明公开
EP1783349A4 PISTON RING, PISTON, CYLINDER AND PISTON PIN HAVING AMORPHOUS AND HARD CARBON FILM 审中-公开
活塞环,活塞,气缸和无定形活塞销与硬质碳膜

PISTON RING, PISTON, CYLINDER AND PISTON PIN HAVING AMORPHOUS AND HARD CARBON FILM
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