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.
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.
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.
应用推荐