Researcher preparing for the stress testing of a concrete block. The metal plates apply a precise amount of pressure, and the point at which the concrete breaks reveals information about its strength. | |
Licence : | Libre de droits |
Crédit : | Science Photo Library / Digi_dog |
Model Release : | Non requis |
Property release : | Non requis |
Durée : | 12 Secondes |
Aspect ratio : | 16/9 |
Restrictions : |
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