This is a hierarchical centralized management structure which is composed of controlling center with security strategy in the upper layer and multiple defence units in the lower layer.

CFD simulation of the flameproof unit in the diesel engine’s inlet system

Content of mountain flood prevention preparation plan;

Practice of mountain flood prevention in Changqingxi Watershed in Fujian Province;

Establishment of mountain flood prevention warning and monitoring system in Loudi City;

Psychological warfare in modern age: more attention to be paid to defense and application;

Anti-ballistic missile defense radar and ballistic missile penetration;

Information-obtained systems of ballistic missile defense;