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| Russian | English |
| приведенная толщина металла | massivity (Oddessita) |
| приведенная толщина металла | section factor (Mass factor (called also massivity, section factor or HP/A or A/V) is defined as the ratio between the perimeter of the profile exposed to fire and the section of profile. Oddessita) |
| приведенная толщина металла | mass factor (Centaur) |