弹性分组环（RPR）是一个由IEEE标准化的基于环网拓扑的新一代城域光传送技术。
Resilient Packet Ring (RPR) is an IEEE standardized next-generation metro optical transport technology based on ring network topology .
城市光传送网弹性分组环(rpr)技术要求等。
Metropolitan optical transport network RPR technical requirement etc.
分别采用双波长法和相移法研究了光弹性条纹的自动分析技术。
The application of two-wavelength method and phase shifting for automatic analysis of fringe patterns resulted from photoelasticity was investigated.
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