difference in temperature短语¹⁴⁴⁹⁷²⁺² 基本例句 温差 The internal losing exergy mainly caused by the difference in temperature of heat conduction and concentrated heat. The matrix was introduced to optimize the total area of heat conduction. 引入矩阵概念，对三效降膜蒸发系统总传热面积进行优化，得到加热蒸汽消耗量与总传热面积之间的关系。 cnki