过去式：retrofired过去分词：retrofired现在分词：retrofiring第三人称单数：retrofires
Maximum Atmospheric Entry Angle for Specified Retrofire Impulse
Visual target for retrofire attitude control
Apollo 7 retrofire and reentry of service propulsion module.
VISUAL TARGET FOR RETROFIRE ATTITUDE CONTROL
Tracking Studies of Apollo 7 and Intelsat II
Got your seat belts hooked?
Method of Determining the Aerodynamic Characteristics of a Flying Vehicle from the Surface Pressure
Spaceshots and Snapshots of Projects Mercury and Gemini
Luna 7
Guidance system operations plan for manned cm earth orbital and lunar missions using program Colossus 3. Section 2: Data links
