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40 MeV 28Si5+ ion induced blue shift in the optical band gap of amorphous Se80xTe20Pbx thin filmsChalcogenideBlue shiftIrradiationOptical band gapAmorphous thin films of Se 80− xTe 20Pb x (0< x<2) have been prepared by thermal evaporation method. The effect of 40 MeV 28Si 5+ ion...
SY2000-20(I-A)型数字交换机(最大容量576线) 最大容量 576线 长宽高(mm) 6005001108 主要功能特点: 本系统总端口数为 224 个 JSY2000-20(II-B)系统最大容量576线,内外线可自由配备,来电显
•Multi-component glasses of Se–Te–Sn–Pb systems have been synthesized.•Role of Pb inclusion on thermo-physical properties of Se–Te–Sn glass has been reported.•Advanced Transient Plane Source (TPS) technique has been used for this purpose.•The composition dependence of the thermal...
设备单模块:JSY2000-20系统数字程控交换系统采用多CPU的处理方式,每个单独的用户或中继模块都具有一个子CPU,故JSY2000-20系统数字程控交换系统可支持带电热插拔。 故障监视和诊断:JSY2000-20系统数字程控交换系统的操作管理软件可对对本系统全程监视。如发生故障,故障排除后,系统能够自动恢复,不影响已建业务的连接。