求翻译：在相同的外界辐射条件下，随着RT28含量的增加，立方体上板外壁与立方体内部的最大温差逐渐增大，当RT28含量为40%，A组和B组对应的最大温差分别为25.231℃和18.717℃。是什么意思？

In the same external radiation conditions, with the rt28 content increases, the maximum temperature difference of the plate outer wall of the cube within the cube is gradually increasing, when the the rt28 content is 40%, corresponding to the maximum temperature difference of a and b, respectively,

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Under the same outside radiation condition, along with the RT28 content increase, the cube boards up the outer wall and the cube interior maximum temperature difference increases gradually, when the RT28 content is the maximum temperature difference which the 40%, A group and B group correspond resp

Under the same conditions of external radiation, with increasing RT28, cube and cube Panel on external maximum internal temperature increases, when RT28 content group to 40%,A group and b corresponds to the maximum temperature 25℃ and 25.231 ° c, respectively.

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