noun
flight control surface
Aviation term for movable surfaces such as ailerons, elevators, and rudders that control an aircraft's attitude.
動翼の故障が墜落の原因と見られている。
A failure of the flight control surfaces is considered the cause of the crash.
noun
turbine blade
Mechanical engineering term for the rotating blades in a turbine, compressor, or similar rotary machine.
タービンの動翼は高温高圧に耐える特殊合金で作られる。
Turbine blades are made of special alloys that withstand high temperatures and pressures.