And he said rescuers were debating whether they would in fact need to line the rescue tunnel with metal casing as planned, a process that would take several days.
并且他说营救人员正在辩论他们是否实际需要铺设金属壳的营救管道作为计划，这个过程将花费几天！
2
The stage where the volume pumped places the influx inside the casing shoe (the shoe line), is important as well but has not been included in these basic phases in well control.
泵入体积将侵入挤入管鞋内这一阶段是个十分重要的阶段，但不包括在井控的这几个基本阶段。
3
That introduced the technological process and characteristic of the PVC/SBS general character producing corrugated casing - line pipe.