Military Standard of the People's Republic of China-General Armament Department
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GJB 380.4A-2015
GJB 380.4A-2015 history
2015GJB 380.4A-2015 Aviation Service Fluid Contamination Testing Part 4: Determination of Solid Particle Contamination by Automatic Particle Counting Method
2004GJB 380.4A-2004 Contamination test method of operating liquid for aviation Part 4:Determination of solid particle contamination level by automatic particle counting method
1987GJB 380.4-1987 Aircraft hydraulic system contamination test uses automatic particle counter to determine oil solid particle contamination degree