通过有限生命周期内微型冷库经济性能的分析，推导了微型冷库在使用年限不同时的经济保温层厚度计算公式。

The calculation equation of the economic insulating layer thickness in different service life was (derived) through the life cycle economical analysis of the mini-cold storage.

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但是平时自己注意护理，就可以延长皮表带一半以上的使用年限，非常经济实惠。

But usually they pay attention to nursing, can prolong the service life of more than half of the leather watchband, very affordable.

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