JD－4450型拖拉机经济使用寿命的研究  

STUDY ON THE REASONABLE SERVICE LIFE FOR IMPORTED JD-4450 TRACTOR

作　　者：朱奎林[1] 张清华[1] 张秀德[1] 魏德强[1] 战兰英 闵洪生 

机构地区：[1]黑龙江八一农垦大学农业工程系,黑龙江省牡丹江农管局

出　　处：《黑龙江八一农垦大学学报》1995年第1期58-66,共9页journal of heilongjiang bayi agricultural university

摘　　要：对ＪＤ－４４５０型拖拉机选定较大量的典型机组共４４９台，长期跟踪调查；对有关经济使用寿命的指标进行分析研究。采用国际通用的方法，确定出了ＪＤ－４４５０型拖拉机的经济使用寿命为１１年。The long term tracing investigation for many selected groups of typical JD -4450 tractor had been carried out; and the index relating to the reasonable service life were analyzed and studied in this paper. The reasonable service life for JD -4450 tractor was obtained by the method that is generaly recognized in the world.

关 键 词：JD-4450型 拖拉机 经济使用寿命 

分 类 号：S219.01[农业科学—农业机械化工程]