The author puts forward that the lightning arresting measures taken on ancient Chinese buildings are defensive,passive and thus seldom effective.
本文根据我国古建筑中常见的所谓避雷措施，诸如“避雷室”、“正吻”及“雷公柱”等，并结合现代有关雷电理论进行分析研究，认为我国古建筑中的避雷措施仅是防御性的、被动的，因此其避雷效果是很有限的。
There are a lot of sitesin Ming dynasty and defensive works along the Great Wall.
文章首先了解长城的历史及军事防御体系;其次以实地调研为依托从堡寨的建置沿革、地形的防御性、聚落的组成特征等方面进行个例分析;总结了军事堡寨的选址、内部构成特点。
Effects of herbivore stress by Aphis medicaginis Koch on the contents of MDA and activities of protective enzymes in different alfalfa varieties;
蚜虫(Aphis medicaginis Koch)危害胁迫对不同苜蓿品种体内丙二醛含量及防御性酶活性的影响
Herein lies the defensive nature of our struggle.
这就是斗争的防御性。
defensive strategic nuclear weapon systems
防御性战略核武器系统
implementing and sticking to a national defense policy that is defensive in nature;
实行和坚持防御性国防政策；
Our defense policy is defensive in nature.
我们实行的是防御性的国防政策。
China has consistently pursued a national defense policy that is defensive in nature.
中国始终奉行防御性的国防政策。
China pursues a national defense policy that is defensive in nature.
中国奉行防御性的国防政策。
barricade (defensive ~; offensive ~; observation ~; rest ~)
障碍工事 (防御性~；攻击性~； 观察性~； 休息 用~)
A defensive barrier of pointed, inclined stakes or barbed wire.
防御工事筑有尖利的、倾斜的木桩或铁蒺藜的防御性的障碍物
A defensive movement or attitude, especially in fencing;a guard.
招架防御性的行动或态度，尤指击剑中的防御；挡开
a defensive missile designed to shoot down incoming intercontinental ballistic missiles.
用来击落洲际导弹的一种防御性导弹。
To camp in a defensive encirclement.
围成一圈，形成一个防御性营地
Ad Hoc Expert Group on Defensive Security Concepts and Policies
防御性安全概念与政策特设专家组
The Human Immunodeficiency Virus is the virus which kills the defensive white cells.
HIV是杀死防御性的白血球的罪魁祸首。
The Research of Military Fortresses of Nine Defense Areas Along the Great Wall in Ming Dynasty;
明长城“九边”重镇军事防御性聚落研究
The Defensive Tactics and the Early Political Modernization in Germany: An Interpretation to the Theory of Defensive Modernization;
论德国政治现代化初期的“防御性”特征
Discussion on Defensive Medicine from Onus Proof Conversion;
从“医疗举证责任倒置”看防御性医疗
The Application of Non-words Defending Behaviors in Class;
课堂教学中防御性非言语行为的运用
A Study on University Students' Defensive Pessimism and Its' Influencing Factors
大学生防御性悲观及其影响因素研究