There is no possibility of occurrence on ebullition of subcooled nucleate in external surface that we designed,meantime temperature of internal component reach the designed is achieved in motion of the atomic reactor in steady-state,which is the critical requirements of China Advanced Research Reactor There is no possibility of occurrence on ebullition of subcooled nucleate in external surface that we designed, meantime temperature of internal component reach the designed is achieved in motion of the atomic reactor in steady-state, which is the critical requirement of China Advanced Research Reactor