It is very important for the decrease of the composite power coefficient to increase power density, especially increase volumetric power density.

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。

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Propionate with a proportion below 12% showed a positive impact on the power density, while more than 17% of propionate caused a decrease.

丙酸在低于12%时对功率密度有积极作用，但多于17%时会造成功率密度的降低。

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