This lets me track nested servlet requests and will be important to support tracking controllers in Web application frameworks (discussed in Part 2).
这样我就能跟踪嵌套的servlet请求，对于在Web应用程序中支持对控制器的跟踪，这也会很重要(在第二部分讨论)。
Air travel still relies on a ground-based tracking system from the 1950s, which forces planes to use inefficient routes in order to stay in contact with controllers.
自上世纪50年代以来，航空服务一直依赖于地面导航的航道系统，飞机被迫按低效航线飞行，以与空中交通管理员保持联系。
Neural networks and PD feedback controllers for adaptive tracking in nonlinear systems are presented.
研究了应用神经网络和PD反馈控制实现非线性系统的自适应跟踪问题。
Neural networks and PD feedback controllers for adaptive tracking in nonlinear systems are presented.
研究了应用神经网络和PD反馈控制实现非线性系统的自适应跟踪问题。
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