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Foam, esp. polyurethane, useful as cavity wall insulation - made from mixt. contg. purified used motor oil, thus reducing waste disposal costs
Foam, esp. polyurethane, useful as cavity wall insulation - made from mixt. contg. purified used motor oil, thus reducing waste disposal costs
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机译:泡沫,特别是聚氨酯,用作空腔墙体隔热材料-由混合料制成。续精制废旧机油,从而减少废物处理成本
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A foam material, esp. polyurethane foam, is made from a reaction mixt. contg. used motor oil. The foam may be used for cavity wall insulation. The slight deterioration in the properties of the foam produced is more than offset by the redn. in costs of otherwise disposing of the oil. The oil is pref. first (mechanically) freed of slivers etc.
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