本文从物流概念与现代物流的知识体系出发，分析了现代物流提升单位效率的主要途径。
This paper starts from the conception of Modern Logistics and other correlative knowledge of logistics, especially analyzing how Modern Logistics improves the working efficiency.
通过对传统使用的两电平逆变器的损耗分布进行计算和验证，分析了进一步提升逆变器效率的途径。
According to the loss calculation and verification results, the way to further increase inverter's efficiency is analyzed.
分析了矿井提升机整定前后主要性能参数，提出了矿井提升机节能的方法及提高提升设备效率的途径。
This paper analyses main function parameters of mine hoist before and after adjusted, puts into saving energy methods of mine hoister and raises efficiency ways of hoisting equipments.
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