就低的复杂度和开销而言，DTM与SONET技术相拟，但DTM还包括信令和交换，以增加灵活性和避免SONET的层次结构。
SONET technology in terms of low complexity and overhead, but DTM includes signaling and switching to increase the flexibility and avoid the hierarchical structure of SONET.
就低的复杂度和开销而言，dtm与sonet技术相拟，但dtm还包括信令和交换，以增加灵活性和避免sonet的层次结构。
DTM is similar to SONET technology in terms of low complexity and overhead, but DTM includes signaling and switching to increase the flexibility and avoid the hierarchical structure of SONET.
分析了云浮硫铁矿中微量铊的相态分布，包括可交换相，碳酸盐结合相，铁锰氧化物结合相，有机质及硫化物结合相，硅酸盐结合相等相态。
The phase speciations of trace thallium in the Yunfu pyrite ore are analyzed, including exchange phase, carbonate phase, oxide phase organic, sulfide phase and phase combined with quartz etc.
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