(b) Forecasting of the area of re-entry of such an object into the upper layers of the atmosphere and of the possible regions of impact on the Earth's surface of a partially destroyed reactor structure and individual reactor and nuclear power unit fragments;
(b) 预测此一物体重新进入高空大气层的区域和部分遭破坏的反应堆结构、单体反应堆和核动力装置碎片撞击地面的可能区域；