| JD－4450型拖拉机经济使用寿命的研究 |
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| 引用本文： | 朱奎林,张清华,张秀德,魏德强,战兰英,闵洪生.JD－4450型拖拉机经济使用寿命的研究[J].黑龙江八一农垦大学学报,1995(1). |
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| 作者姓名： | 朱奎林 张清华 张秀德 魏德强 战兰英 闵洪生 |
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| 作者单位： | 黑龙江八一农垦大学农业工程系，黑龙江省牡丹江农管局 |
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| 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。
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| 关 键 词： | JD－4450型拖拉机，经济使用寿命 |
STUDY ON THE REASONABLE SERVICE LIFE FOR IMPORTED JD-4450 TRACTOR |
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| Zhu KuiLin,Zhang Qinghua.STUDY ON THE REASONABLE SERVICE LIFE FOR IMPORTED JD-4450 TRACTOR[J].Journal of Heilongjiang August First Land Reclamation University,1995(1). |
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| Authors: | Zhu KuiLin Zhang Qinghua |
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| Institution: | Zhu KuiLin;Zhang Qinghua |
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| Abstract: | 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. |
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| Keywords: | JD -4450 tractor reasonable service life |
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