【摘要】 本文建立了机械加工尺寸的时序模型 ,并对其进行了最小方差预报。结果表明 :对过程的长期发展所作的预报就是其均值。更多还原

【Abstract】 Model of the time series about machining size has been set up.The model forcast is made based on the least square error.The result shows that the long-term prediction is the average value for a process.更多还原