- double-impeller pump
- 双: two; twin; both; dual
- 叶轮泵: vane pump
- 双叶轮: bilobed wheel
- 叶轮泵: diffuser pump; impeller pump; sickle pump; turbine pump; vane pump; vane type pump; vane-type pump; wing pump
- 背叶轮泵: back-to-back impeller pump; pumwith opposed impellers
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