【摘要】 本文应用数理统计方法,建立计算CA—141型运材车最佳更新期的数学模型。通过对数学模型的计算分析发现,新车购置费和平均成本水平的高低对最佳更新期的直接影响,当新车购置费为6万元时,最佳更新期为5.5年。更多还原

【Abstract】 The paper used the method of mathematical statistics to found themathematical model of the best replacing period of CA-141 transporting trucks. After calculation and analysis of the mathematical model, we found that purchasing fee for new trucks and average cost had directly influence on the best replacing period. If the purchasing fee for a new truck is 60,000$, the best replacing period is 5. 5 year.更多还原