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一个看不见的冷壁从而出现两代人之间。
An invisible cold wall thus appears between the two generations.
youdao
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单室内热冷壁，立式结构，底部进出料。
Single chamber, inside heating, cold wall, vertical configuration.
youdao
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单室内热冷壁，立式结构，底部进出料。
Single chamber, inside heating, cold wall, vertical configuration.
youdao