国防经济学的英文：
economics of defense
n. 经济学；经济
an economical shopper;
精打细算的购物者;
economic planning
制订经济计划
Economics is the base and politics is the concentrated expression of economics
经济是基础，政治则是经济的集中表现。
economics of different sectors and economics ofspecialized fields
部门经济学和专业经济学
n. 防御，防御工事；防御物；防御措施；辩护；（比赛中的）守方
v. 抵御，防御
(in a match) the defense
守方
The defenses of the city must be strengthened.
这个城市的防御工事必须加强。
He was the then secretary of Defense.
他是当时的国防部长。
Offense is the best defense.
进攻是最好的防御。
Attack is the best form of defense
攻击是最好的防御