葉輪

turbine wheel

leaf / page / lobe / (historical) period / classifier for small boats / a surname

wheel / disk / ring / steamship / to take turns / to rotate / by turn / classifier for big round objects: disk, or recurring events: round, turn

wheel; disk; ring / steamship / to take turns; to rotate / classifier for big round objects: disk, or recurring events: round, turn

turbomachine