It carried out the ultraviolet accelerated aging test on the polypropylene woven sack produced and used in Northwest of China, and analyzed and studied the results.
对西北地区生产使用的聚丙烯塑编袋进行了紫外线加速老化试验，并对结果进行了分析研究。
It carried out the ultraviolet accelerated aging test on the polypropylene woven sack produced and used in Northwest of China, and analyzed and studied the results.
对西北地区生产使用的聚丙烯塑编袋进行了紫外线加速老化试验，并对结果进行了分析研究。
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