| 释义 |
HH1 or HH-1 may refer to: - HH-1 Huey, a military helicopter
- PRR HH1, a steam locomotive
- Sindlinger HH-1 Hawker Hurricane, a homebuilt aircraft
- Tetulomab (HH1), an experimental cancer drug
- HH 1, the first Herbig-Haro object identified
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