您要查找的是不是：
- The critical energy is the system energy which just makes the post-fault trajectory be tangential to the protection surface of the key lines. 该临界能量为故障后系统轨迹刚好与关键线路上相应保护动作面相切时系统所获得的能量。
- At last, it analyzes and evaluates water quality in Liaohe area and Tieling area and issues some advice how to protect surface water resources. 对辽河流域铁岭段水质现状进行分析评价，并对辽河铁岭段的地表水水资源保护提出建议。
- At last,it analyzes and evaluates water quality in Liaohe area and Tieling area and issues some advice how to protect surface water resources. 对辽河流域铁岭段水质现状进行分析评价,并对辽河铁岭段的地表水水资源保护提出建议。
- She subscribes to an animal protection society. 她捐款给一个动物保护协会。
- We subscribe to an animal protection society. 我们定期捐款给一个动物保护基金会。
- The young in our society need careand protection. 我们社会的年轻人需要受到关怀和爱护。
- He was paying out half his profits as protection. 他把所得利润的一半交给歹徒作为保护费。
- They lobbied on the environmental protection issue. 他们就环境保护问题在议员中进行了游说。
- A thin jacket is a poor protection against cold. 一件单薄的夹克衫不足以御寒。
- The settlers banded together for protection. 移民联合起来保护自己。
- a substance used to produce a shiny protective surface on footwear. 用于给鞋面打上光亮的保护层的物质。
- He's devoted his whole life to the protection of the rare animals. 他终生献身于珍稀动物的保护。
- a substance used to produce a shiny protective surface on footwear 用于给鞋面打上光亮的保护层的物质
- A thin coat gives little protection against the cold. 一件薄上衣没有什么御寒作用。
- Development of Automobile Protective Surface Treatment Technique 汽车防护性表面处理技术发展
- An outer layer or coating applied to a surface for protection or decoration. 饰面，保护面装在外面的外层或薄层，为了保护或装饰
- Any payment exacted for protection. 勒索的钱财强逼某人支付的保护费
- A place offering protection and safety; a shelter. 避难所提供保护及安全的场所; 庇护所
- She put on dark glasses as a protection against the strong light. 她戴上墨镜以防强光的照射。
- The ships required the protection of naval and air power. 船只本身需要海军和空军的保护。
