ground-effect machine การใช้

• The aerospace industry is the complex of manufacturing concerns engaged in the production of flight vehicles ， including unpowered gliders and sailplanes ， lighter than air - craft ， ground - effect machines ， heavier than air craft of both fixed - wing and rotary - wing varieties ， military missiles ， space launch vehicles ， and manned or unmanned spacecraft ； propulsion systems and other thrusting devices ； on board equipment essential to the design purpose of the flight vehicle ； and ground - based support equipment needed for the operation and maintenance of the flight vehicle
• The aerospace indu * * * y is the complex of manufacturing concerns engaged in the production of flight vehicles , including unpowered gliders and sailplanes , lighter than air - craft , ground - effect machines , heavier than air craft of both fixed - wing and rotary - wing varieties , military missiles , space launch vehicles , and manned or unmanned spacecraft ; propulsion systems and other thrusting devices ; on board equipment essential to the design purpose of the flight vehicle ; and ground - based support equipment needed for the operation and maintenance of the flight vehicle
• The aerospace industry is the complex of manufacturing concerns engaged in the production of flight vehicles , including unpowered gliders and sailplanes , lighter than air - craft , ground - effect machines , heavier than air craft of both fixed - wing and rotary - wing varieties , military missiles , space launch vehicles , and manned or unmanned spacecraft ; propulsion systems and other thrusting devices ; on board equipment essential to the design purpose of the flight vehicle ; and ground - based support equipment needed for the operation and maintenance of the flight vehicle