The state exercises unified leadership over defense-related activities.
这些工作主要由国家科技局领导。
2
Several unofficial defense-related websites published grainy mobile-phone video footage that they said showed the J-20 speeding along a runway and deploying parachutes from its rear.
Super computers help tackle the toughest scientific problems, including simulating commercial products like new drugs and defense-related applications such as weapons design and code breaking.