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1·Reasonable selection of plane and longitudinal profile alignment is the most important thing related to the environmental protection.

这其中选择合理的平纵面线型对环保的关系最大；

2·It is of significance to disclose channel processes and the causes of formation for terrace in practice and theory by studying longitudinal profile of the channel.

河流纵剖面的研究对于河谷、河床过程的认识以及阶地成因的揭示具有重要的理论和实际意义。

3·By analysis of the morphological process in longitudinal profile, cross section and river pattern, the law of river course evolution at Yellow river estuary was summarized.

通过分析黄河口河道在纵剖面、横断面、河型等方面的演变过程，总结归纳出黄河口河道的演变规律。

4·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。

5·So the relationship between longitudinal gradient, grade length limit, vertical curve and safety is analyzed, which can be referred to improve the safety and optimize the profile design.

根据下坡路段事故统计资料，分析纵坡坡度、坡长、竖曲线和下坡衔接平曲线与道路安全的关系，为提高长大下坡路段安全，优化纵面设计提供参考。

6·A pressure disturbance cannot drive the energy release profile uniformly to the anti-node region to result in a sustained longitudinal wave.

压力扰动不可能驱使能量释放分布图移至波腹区域以产生持续的纵向波。

7·The tooth profile error and longitudinal form error are calculated, and the change rule with setting Angle of them is got.

本文在推导出齿形误差计算公式的基础上，给出一种使齿形设计误差最小的最佳齿形角的求法。

8·Said sealing element is fixed at least to a longitudinal side of the profile body and is made of a plastic.

所述密封元件至少固定在所述型材主体的一个纵面上并且由塑料构成。

纵剖面

1·By analysis of the morphological process in longitudinal profile, cross section and river pattern, the law of river course evolution at Yellow river estuary was summarized.

通过分析黄河口河道在纵剖面、横断面、河型等方面的演变过程，总结归纳出黄河口河道的演变规律。