As the train speed and density is great improved , the track circuit can transmit more information to the train signal 、 the train speeding protection system or the train control system that is necessary 随着列车速度和密度的进一步提高,要求轨道电路能够向机车信号、列车超速防护系统或列车控制系统传输更多的信息。
Suspa , headquartered in nuremberg ( germany ) , is a leading and innovative manufacturer of gas springs , hydraulic and vibration dampers , height adjustment systems , crash management and safety systems 苏斯帕，总部设立于德国纽伦堡；苏斯帕是一家在气弹簧、液压及阻尼减震器、高度调节元件以及汽车安全防护系统领域具有领先水平和创造性的制造商。
Chronic stimulation of the lungs and bronchi result in chronic bronchitis and emphysema causing shortness of breath and wheezing . smoking also weakens the defense mechanism , making smokers more prone to chest infections 吸烟者的气管及肺部受到长期刺激，会引起慢性支气管炎及肺气肿，引致气促和气喘。吸烟亦会削弱肺部防护系统，增加患上肺炎的机会。
Classification of environmental conditions - part 4 - 3 : guidance for the correlation and transformation of environmental condition classes of iec 60721 - 3 to the environmental tests of iec 60068 ; stationary use at weatherprotected locations 环境条件分类.第4 - 3部分: iec 60721 - 3的环境条件等级与iec 60068的环境试验相关和转换的指南.在有气候防护系统的区域的固定使用
Abstract : the supplemental restraint system on benz car is composed of safety air bag system and safety belt retractor system . this paper introduces the structure characteristics ， working principle and control circuit and expounds the fault code reading and delating methods 文摘:奔驰轿车装备的辅助防护系统由安全气囊系统和座椅安全带收紧系统2部分组成，介绍了其结构特点、工作原理及控制电路，阐述了读取与清除故障代码的诊断测试方法。
Base on the conclusions of this thesis , we put these solutions in practice on a large , multi - level ip network and gain a satisfied effect : first , the integration of the special network for authorizing and ca authorizing technology will improve the system security and the rate of connection 通过将研究成果运用于省一级运营ip网，在该网络上部署了全面安全防护系统，取得了令人满意的效果： 1 .通过认证专网和ca认证相结合，保证了认证体系的安全、可靠、高效。
In addition , the paper studies the drawbacks of the existing network invasion detecting system and concludes that the basic reason why the users are not satisfied with them is that it is hard to reduce both the misinformation rate and the rate of failing to report simultaneously . then , it presents that attack defending system and invasion analyzing system are the two key orientations for the development of invasion detecting system , and also analyzes and explores their corresponding technological requirements 文中对当前网络入侵检测系统的不足进行了深入的分析，认为误报率和漏报率难以同时降低是导致用户对其不满的根本原因，指出：攻击防护系统和入侵分析系统将是入侵检测系统发展的两个主要方向，并对相应的技术要求进行了分析和探讨。
