- HRAabbr. 高超音速研究飞机（Hypersonic Research Airplane）；（美）卫生资源处（Human resource accounting）；健康注册授权（Health
- HWTabbr. Hypersonic Wind Tunnel 高超音速风洞
- HYPTVabbr. Hypersonic Test Vehicle 高超音速试验飞行器
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