问题描述：
英语翻译
The total heat loss value is determined by theoretical calculation of insulation behaviour,take an emissivity factor of 0.4 for insulation components and again allowing for heat loss by convection
The total heat loss value is determined by theoretical calculation of insulation behaviour,take an emissivity factor of 0.4 for insulation components and again allowing for heat loss by convection
问题解答：
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