aperture of oil chamber

brake cooling oil chamber

double-chamber oil quenching-gas cooling furnace

parking brake oil chamber

parking brake release oil chamber

pilot oil chamber

pressure oil chamber

retarder oil chamber

secondary brake release oil chamber

service brake oil chamber

spool spring chamber oil

triple chamber oil quenching furnace

oil blast explosion chamber

oil circuit breaker arc interruption chamber

oil cooling chamber

oil expansion chamber

oil separate chamber

correlation of oil-oil

Croton oil (Oil of tiglii)