The objective function of the optimization is the saving present value per unit heat consumption during the calculation period.
目标函数为计算期内单位供热量的节约额现值。
By the calculation it is found that the decreasing radius is all the same for different particle radius at per unit time when the spherical sample particle is evaporated.
本文在计算恒温下蒸发球形试样粒子时，发现每单位时间蒸发缩小的半径相等。
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