failure rate model unit
故障率模型单元
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The replacement of some equipment's components makes it in partial update state. The equipment's residual life with such characteristic cannot be calculated by using unit failure rate model.
维修中对设备零部件的更换，使其经常处于局部更新状态，按单元的故障率模型无法计算具有这种特点设备的剩余寿命。
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