It is a fact that no structural material is perfectly elastic. 事實(shí)上沒(méi)有一種結構材料是十全十美的彈性體。
They are widely used in high elastic resilient cold cure, microporous elastomer and semi-rigid polyurethane foam plastics. 廣泛應用于高回彈冷熟化，微孔彈性體及半硬質(zhì)聚氨酯泡沫塑料制品。
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