This strip is composed of an intumescent material which swells when subjected to fire. 这种狭条是用受到燃烧时发生膨胀的热胀材料组成的。
intumescent英英释义
Adjective:
abnormally distended especially by fluids or gas;
"hungry children with bloated stomachs" "he had a grossly distended stomach" "eyes with puffed (or puffy) lids" "swollen hands" "tumescent tissue" "puffy tumid flesh"