设备的费用效率是设备的综合效率(或系统效率)与设备的寿命周期费用之比值。它反映了单位周期费用所能够取得的效率。我们将此方法应用于设备选型中,取得了很好的效果,现介绍如下。在以往的设备选型中,未能对设备的寿命周期费用进行系统的考虑,选购设备时,往往盲目追求某一阶 The cost efficiency of a device is the ratio of the overall efficiency (or system efficiency) of the device to the life cycle cost of the device. It reflects the efficiency that the unit cycle cost can achieve. We have applied this method to equipment selection and achieved good results. We now introduce it as follows. In the past, equipment selection did not systematically consider the life cycle cost of the equipment. When purchasing equipment, it often blindly pursued a certain order.