Presented is a model for the multiregion and variable node PWR core.
建立了多区变节点压水堆堆芯的数学物理模型。
2
The region is engaged in a multi-day earthquake-and-tsunami drill involving around 20,000 people.
该地区正在进行为期多日的地震和海啸演习，约有2万人参加。
3
The organization serves as the coordinating hub for the multi-state region and as a partnership of organizations to mediate disasters and save lives caused by earthquakes in the central U.S..