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.

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恒定加速度试验是可靠性试验中一种重要的试验项目，埋沙法和磁贴法作为该试验项目的两种重要方法已经被广泛使用。

Constant acceleration test is an important testing item in reliability testing, the covering up sand and the sticking on magnet are used widely which are important for this testing item.

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在确定单体VRLA蓄电池可靠性参数时，可通过现场使用调查或加速寿命试验的办法来求得。

Reliability parameters of VRLA battery cell may be gotten by on-the-spot application investigation and accelerated life testing.

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