SDH is made from SDH network unit. Its basement of transmission technology is frame structure whose net functions include normal management, trouble management and property management and so on.
SDH由SDH网络单元组成，其传输技术基础是帧结构，其网络功能包括一般性管理、故障管理、性能管理、配置管理、安全管理。
The research results illustrate that frame structure with basement isolation can reduce the horizontal earthquake response of superstructure effectively compared with traditional technique.
研究表明：框架结构采用橡胶垫隔震支座时具有明显的隔震效果，它能大大减轻结构的水平地震作用。
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