Pencil on background of engineering drawings. Science, mechanics and mechanical engineering
Palabras clave
technical,
bolt,
drawing,
nut,
crayons,
technology,
science,
engineer,
engineering,
industry,
geometry,
line,
architectural,
scheme,
graphic,
drawing,
abstract,
illustration,
detailed,
design,
blueprint,
crosshatch,
paper,
draw,
background,
work,
draft,
construction