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但是由于完全预混式燃烧器火焰短且温度高，增加了火焰向燃烧器的传热，造成燃烧器头部过热，使材料老化加快。
But the short flame and high temperature of fully aerated burners conduct more heat through burners and that causes the head of burners overheat and material the size and structure of burners.
储存老化将对环氧预浸料的性能产生显著的影响，进而影响到印刷电路板的质量。
The storage aging of epoxy prepreg has proud effects on the electrical and mechanical properties of the cured PCBs.
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