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To estimate the life of vacuum fluorescent display (VFD) more accurately and reduce test time and cost, four constant stress accelerated life tests (CSALTs) were conducted on an accelerated life test model. In the model, statistical analysis of test data is achieved by applying lognormal function to describe the life distribution, and least square method (LSM) to calculate the mean value and the standard deviation of logarithm. As a result, the accelerated life equation was obtained, and then a self-develop... 相似文献
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