提高功率密度特别是提高体积功率密度对于减小综合功率系数非常重要。
It is very important for the decrease of the composite power coefficient to increase power density, especially increase volumetric power density.
但它是非常有限的总重量体积和输出功率密度研究。
But it is very limited in total power output density in weight and volume.
当前，安全可靠、有利于环保、高功率密度、体积小、重量轻的新型二次锂电池正被广泛应用。
Nowadays, the novel secondary lithium battery is widely used for it is safe and reliable, small and light, good for environment protection with high power density.
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