参照区段出现了越来越多的RCF问题，而相同条件下的经过打磨的区段却一点RCF问题都没有，纵剖面仍然很平滑。
The reference sections showed growing RCF problems, while ground sections in otherwise identical conditions had no signs of RCF and displayed a smooth longitudinal profile.
参照区段出现了越来越多的RCF问题，而相同条件下的经过打磨的区段却一点RCF问题都没有，纵剖面仍然很平滑。
The reference sections showed growing RCF problems, while ground sections in otherwise identical conditions had no signs of RCF and displayed a smooth longitudinal profile.
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