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| приведенная толщина металла (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) | |||
| коэффициент поперечного сечения | |||
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| |||
| приведенная толщина металла (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) | |||
| коэффициент поперечного сечения | |||