内电离

certified internal auditor

internal medicine of traditional Chinese medicine

internal lining

internal-external upset tubing【油气】

feedback arrangement, internal with particular characteristic in regulating systems

cardinal cell【昆】;discoidal triangle【昆】;internal triangle【昆】

conjoint drive for lift valves and drives for internal-combustion engines

spark ignition, electric with two or more sparking plugs for internal-combustion engines