Assertion: gorlov helical turbine | /r/HasAspect | undergone scale testing
Facets:
value: at sea
type: LOCATION
value: at laboratory
type: LOCATION
Source sentences:
text: Among the other vertical-axis turbine systems, the Davis Hydro turbine, the EnCurrent turbine, and the Gorlov Helical turbine have all undergone scale testing at laboratory or sea.