Firefighting foam

（重定向自Class A foam）

Firefighters sprayed foam on structures in the Mammoth Hot Springs complex on September 10, 1988 during the Yellowstone Fires.

A fire truck demonstrating Class A foam in a CAFS system

Firefighting foam is a foam used for fire suppression. Its role is to cool the fire and to coat the fuel, preventing its contact with oxygen, resulting in suppression of the combustion. Fire-fighting foam was invented by the Russian engineer and chemist Aleksandr Loran in 1902.

单词	Class A foam
释义	Class A foam 英语百科 Firefighting foam （重定向自Class A foam） Firefighting foam is a foam used for fire suppression. Its role is to cool the fire and to coat the fuel, preventing its contact with oxygen, resulting in suppression of the combustion. Fire-fighting foam was invented by the Russian engineer and chemist Aleksandr Loran in 1902.
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