The study, for analytical and statistical purposes, the actual gear train, which is summarized through different ways, manual or automatic, or with data recorded via the control / monitoring systems. The analysis of trends trains plays vital role in the quality control process for the year, with particular relevance to the analysis of interpretation of the delays and their causes, in order to enable corrective actions for improvement aimed at minimizing the deviations between the time or trend real and the theoretical programmed
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