A Study on the SDI of Reagan Administration;
里根政府战略防御计划研究
Finally, they changed their policy ho strategic attack to strategic defense.
宋太宗及群臣从战争的现实中逐步改变了对辽策略，终于从战略进攻完全转为战略防御，并采取了若干较为有效的防御措施。
Strategic Defence Initiative
战略防御计划（或战略防御倡议）
Ballistic Missile Defence and American Global Strategy
弹道导弹防御计划与美国的全球战略
(4) the strategic defensive and the strategic offensive;
（四）战略防御和战略进攻；
defensive strategic nuclear weapon systems
防御性战略核武器系统
On Ballistic Missile Defense and U.S.Global Hegemony after Cold War
浅析弹道导弹防御计划与冷战后美国全球霸权
defensive warfare, measures
防御战、 防御措施
The defence strategy of the Qi Great Wall boasts two features:one is the trinity of hillside field defence,Jishui defence and Huanghai defence;
齐长城的防御战略有两大特点,即:山地防御、济水防御、黄海防御三位一体的防御战略;
Tactical plans, such as plans for attack or defence by small formations or units, often have to be changed several times a day.
战术计划，例如小兵团和小部队的攻击或防御计划，常须一日数变。
1. THE STRATEGIC DEFENSIVE IN GUERRILLA WAR
第一节 游击战争的战略防御
CHAPTER VII THE STRATEGIC DEFENSIVE AND THE STRATEGIC OFFENSIVE IN GUERRILLA WAR
第七章 游击战争的战略防御和战略进攻
Of course, guerrilla warfare includes not only the strategic but also the tactical defensive.
当然，游击战争中不但战略上有防御，战术上也是有防御的；
To strengthen and secure(a position)with fortifications.
设防御工事，设防以防御公事加强或防护（战略位置）
Militarily, our basic defense strategy is deterrence.
在军事上，我们的基本防御战略是威慑战略。
-- Implementing the military strategy of active defense.
－－贯彻积极防御的军事战略方针。
The position of the Qi Great Wall in the mililary defensive strategy of the Qi State
齐长城在齐国军事防御战略中的地位
Textual Resarch on the Time of Setting up the Sixth War Zone in Strategic Defense Period in Anti-Japanese Wartim;
抗战时期战略防御阶段第六战区起止时间考
The Understanding about US Plan of NMD;
对美国发展导弹防御系统计划的认识
defense against biological warfare.
抵御生物战争的防御。