ฮือฮาไม่หยุด!!นาคน้อยรำล่าสุดใบ้เลขเด็ด#16/5/61
The prototype aircraft component is built to prove the design or design concept. After all of the design bugs are worked out of the prototype, production tooling is set up, and production models built.
from: http://ezinearticles.com/?Aircraft-Interior-Mockups,-Models,-and-Prototypes&id=2852933
