BS 4819-1:1989
Resistance welding water-cooled transformers of the press package and portable types.
现行
发布日期 :
1989-01-31
实施日期 :
BS M 61:1989
Specification for envelope dimensions of 'P' clamps (loop clamps) for fluid systems
现行
发布日期 :
1989-09-29
实施日期 :
SAE AIR 1262:1989
Aircraft Fire Protection For Helicopter Gas Turbine Powerplant And Related Systems Installations
现行
发布日期 :
1989-05-01
实施日期 :