acceptable level
可接受水平
可接受的等级
可接受程度
可接受准位
合适的水准
验收标准
风险当量
acceptable level of risk
bayonet oil level gauge
cinnamon oil cassia oil
Essential oil Volatile oil
Extract Oil of Lubricating Oil
oil bearing sewage in oil field8
Oil Extractor in Oil Field
oil shale and oil shale residue
ultraheavy oil as fuel oil