flutter clearance造句

例句与造句

1. Flutter clearance tests were again carried out by ARL and manufacture proceeded.
2. Assistance was provided by the Aeronautical Research Laboratories ( ARL ) of the Defence Science and Technology Organisation ( DSTO ) and extensive tests carried out on the ground and in subsequent flight flutter clearance trials . ref.
3. It's difficult to find flutter clearance in a sentence. 用flutter clearance造句挺难的