布包包装，包装完好。
本文介绍一种以“52”布为基材，以防老化聚乙烯膜为复合层的新型急救包包装材料——防老化聚乙烯复合布的研究情况及其主要性能指标。
A new packing material for the first aid dressing is reported. This material is compo sed of "52" cloth and aging-inhibiting polyethylene film. The characteristics of this composite cloth are given.
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