Ключевые слова:
Mechanical properties of materials|Air|Corrugated|Pipes|Packaging|Air transport engineering|Oxygen|Loading|Quality assurance|Hardness|Marking|Defects|Dimensions|Tensile strength|Natural rubber|Synthetic rubber|Oxygen masks|Breathing apparatus|Flexible pipes|Elongation at fracture|Isoprene rubber|Acceptance (approval)|Sampling methods