例句與造句

1. The Balzac began tethered hovering on 12 October 1962 and achieved the first free hover only six days later.
2. After forty years and $ 100, 000, 000 in expenditure the Skycar demonstrated tethered hovering capability in 2003.
3. *1954  Test pilot John R . Noll began tethered hovering flight tests of the McDonnell XV-1, US experimental compound helicopter, designated as a convertiplane.
4. Doaks engineers believed that they could solve the prototypes problems, and after taxiing testing, 32 hours of flight testing in a test stand, and 18 hours of tethered hovering, the aircraft was transferred to Edwards Air Force Base, California, in October 1958.
5. It's difficult to find tethered hovering in a sentence. 用tethered hovering造句挺難的