Because some products show no failure in the random truncation test period, this paper USES the mean rank order method to calculate the empirical cumulative distribution function.
考虑随机截尾试验中有些试验产品无故障数据出现，提出采用平均秩次法计算经验分布函数。
This paper describes st function and its application in the test for products, system life distribution. Finally, a real example is given.
本文讨论了ST函数在产品、系统寿命分布检验中的应用，并提供了一个实例。
Some our customers need prototypes before mold making to do function and assembly test or as the new products for exhibition, so we offer this service as well.
客户在正式做模具前会需要做手板，用来做功能测试和装配，因此我们提供此项服务。
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