prefabricated

the prefabricated smile of an official welcomer

The convector pits are covered with convrete grids that are prefabricated for building pigsties.

and, (3) for a cast unhardened concrete member, a prefabricated plate is stuck to the surface of the member concrete.

Model testing study is made on prefabricated spiral V-notch blasting, and hydromatic method is used to simulate the quasi-static process in blasting of explosive.