The

Determinador

  structure

Substantivo

  was

Auxiliar

  of

Adposición

 all-metal  construction

🚧

Substantivo

,  which

Pronome

  was

Auxiliar

  then

Adverbio

 fabric-covered.

The structure was of all-metal construction, which was then fabric-covered.

The structure was of all-metal construction, which was then fabric-covered.