Basic composition and principle of the FBG strain sensing system were analyzed in detail. According to engineering experience we obtained that FBG sensor was most likely degeneration.
本文首先介绍了光纤光栅的传感原理，并详细分析了光纤光栅应变传感系统的基本组成以及工作原理，根据工程应用的经验得出了光纤光栅传感器最容易出现性能蜕化现象。
According to the practical engineering experience on the Baoan Information Network IDC, this paper discusses the class, services, designing principles, security system and Web Cache.
本文结合笔者在宝安信息网idc建设中的实际工程经验，对IDC的种类、服务、设计原则、安全体系和高速缓存系统等方面进行了探讨。
According to the experience from engineering practices and reliability theory of building structures, clustering index, quantified criterion and clustering classes are confirmed.
根据工程实践经验和结构可靠度理论，进行分析比较确定聚类指标、评定等级量化标准及聚类灰类。
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