Переведите текст, выпишите сказуемые и укажите их формы. Mechanical properties of materials. All materials respond to these forces by elastic
deformation. That is, the materials return their original size and form when the external force
disappears. The materials may also have permanent deformation or they may fracture. The
results of external forces are creep and fatigue.
Compression is a pressure causing a decrease in volume. Tension is a pulling force; for
example, the force in a cable holding a weight. Fatigue is the growth of cracks under stress.
Creep is a slow, permanent deformation that results from a steady force acting on a material.

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