second-order dynamic system

Specially, the dynamic unidirectional authentication is the important security feature of the third generation mobile system varied to the second generation.

其中而用户对网络的认证采用的是动态单向鉴权是3G系统区别于2G系统安全特征的一个重要特性，有其独特的设计方式。

The application of EAM system not only standardized operation flow but also made Shenzhen airport asset and facility management developed from static state to dynamic state, and got ready for the enabling of Shenzhen airport terminal NO. 3 and the second runway in 2011.

深圳机场EAM系统的实施，不但规范了深圳机场设备管理作业流程，还使深圳机场资产设备管理由静态向动态发展，并为2011年深圳机场第三候机楼及第二条跑道的启用作好了准备。

Introduction of Dynamic Control System for the Second Cooling to Increase Slab Surface Quality

引进二冷动态控制系统提高板坯表面质量

Then, this thesis establish kinetic and dynamic model of grab bucket driving system by through Second Lagrange equations in analytic mechanics.

然后，应用分析力学中的第二类拉格朗日方程（Lagrange），建立抓斗驱动系统的动态数学模型。

The second part analyzes the design of Web-based, dynamic assessment system of learning processes.

第二章研究基于网络的对学习过程的动态追踪评估系统的开发；