Then, the divide standard of damage grade and the enduring fire limit time of the tunnel lining caused by fire accident are discussed.
在此基础上提出了隧道衬砌火灾损伤等级的划分标准与耐火极限时间。
Then, the divide standard of damage grade and the enduring fire limit time of the tunnel lining caused by fire accident are discussed.
在此基础上提出了隧道衬砌火灾损伤等级的划分标准与耐火极限时间。
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