为了减轻移动式网络中的三角路由问题，引入一个动态家乡代理为外地的移动式网络提供本地家乡代理的服务。

For reducing the "triangle routing" problem in mobile network, a dynamic home agent is introduced to provide local home agent service for the mobile network in the foreign mobile network.

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本文在比较各种板厚测量方法的基础上，根据成象原理着重论述了差动式激光三角法测厚技术，讨论了聚先进键和咸象系统结构参数的设计，分析了板材抖动产生的动态测量误差，并提出自动补偿的途径。

The design prameters of focus lens and image system are given, and the dynamic measurement error in vibration of the plate is also analyzed, and the way of its autocompensation is presented.

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