Што такое гаручасць, атмасфератрываласць і даўгавечнасць

Flammability is the ability of materials to resist combustion and to continue combustion when they resist combustion or leave the flame.The tolerance of materials exposed to sunlight, hot and cold, wind and rain.Durability is also known as stability and service life. It is the ability to maintain its performance for a long time under the joint action of external forces.