求翻译：针对以上缺陷，有人提出用线型苯酚酚醛树脂作固化剂来满足敷铜板制造的需要，然而由于游离酚和苯酚酚醛树脂本身色深以及加热固化变色性等原因，固化物耐热性仍然不能满足敷铜层压板的高性能发展的要求。是什么意思？

For the above defects, it was suggested that the linear phenol phenolic resin curing agent to meet the manufacturing needs of Bonded Copper, however, still can not meet the free phenol and phenol in phenolic resins, color depth and heat curing discoloration and other reasons, the curing heat resista

For more than one defect, it was suggested to use line-phenol based phenolic resin hardener for copper cooler manufacturing to meet the need, however, because free phenol and phenol based phenolic resin itself heat cured color depth, as well as discolouring of curing, heat-resistant properties of co

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For the above defect, line phenol resin as curing agent have been raised to meet the needs of copper clad plate manufacturing, however because of the free phenol and phenol in phenol-formaldehyde resin itself the color depth and the cause of heat curing discoloration, condensate heat still cannot me

In view of above flaw, some people proposed makes the firming agent with the linear phenol phenolics to come the full enough copper plate manufacture the need, however as a result of the dissociation phenol and phenol phenolics itself reasons and so on color depth as well as heating solidification c