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Sigma KEE - PetroleumLubricant
KB Term: 

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
石油润滑剂
PetroleumLubricant is the subclass of RefinedPetroleumProducts that are lubricants.
Relationships      
Parents 精炼石油产品 A Substance that is the result of the Distilling of Petroleum.
Children 机油MotorOil is the subclass of PetroleumLubricants that are used to lubricate motors.


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