对现行主要以隧道内部无缝覆盖为主要实例进行详细的分析阐述。
Analysis explain with inside of tunnel with biotope room for main instance to cover with to sew is detailed.
隧道式干燥机隧道内部风速和温度的分布不均匀是导致干燥效率低、干燥不均匀的主要原因。
Lack of homogeneity of the air velocity in the tunnel dryer often seems to be the main factor that leads to poor drying efficiency and non-homogeneity of the products.
研究目的：分析计算隧道各个分段的有害气体浓度，以把握公路隧道在自然通风状态下，其有害气体浓度在隧道内部的分布情况。
Research purposes: Under the condition of natural ventilation, this paper analyzes and calculates the harmful gas concentration in each subsection of tunnel.
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