Then, the divide standard of damage grade and the enduring firelimit 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。
2
"Market orders", which ask for a stock to be sold at the best available price without specifying a minimum-as opposed to "limit orders", which set a floor-are also coming under fire.