The paper also discusses residual value and equipment renewal on the condition of two kinds of attritions (material attrition and invisible attrition) .
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) .
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。
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