无形磨损是指设备或物体不是由于生产过程中使用或自然力作用造成的，而是由社会经济变化造成的 价值贬值，是技术进步的结果，无形磨损分两种形式。
Because of the feature of short life, moral wear-out and physical wear can be displayed quickly. The decision of maintenance and replacement has certain universal significance.
因为寿命周期短的特点，无形磨损和陈旧落伍问题会突现出来，所以本文的维修与更新决策有一定的普遍意义。
参考来源 - 设备更新决策·2,447,543篇论文数据，部分数据来源于NoteExpress
并对设备在两种磨损（有形磨损与无形磨损）作用下的残余价值与设备更新进行了探讨。
The paper also discusses residual value and equipment renewal on the condition of two kinds of attritions (material attrition and invisible attrition) .
提出，在考虑无形磨损作用的前提下，用快速折旧法来适当加快工程机械更新换代的设想。
A concept about using an accelerated depreciation method to adequately speed up the renewal for construction machines under the presupposition that invisible wear effects be considered.
文中在对此现象进行探讨的过程中，主要论述了无形磨损对产品技术寿命的决定性作用、无形磨损对产品技术寿命的作用过程及降低无形磨损的措施。
During the probe, this paper tells the decisive function of invisible wear and tear upon products technical life span, the course of the function and measures to reduce such invisible wear and tear.
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