![]() Integrated optical path devices based on planar lightwave circuit - Part 2 :DWDM filter based on AWG technology 平面光波导集成光路器件 第2部分:基于阵列波导光栅(AWG)技术的密集波分复用(DWDM)滤波器 |
![]() Measuring relays and protection equipment - Part 22-4: Electrical disturbance tests - Electrical fast transient/burst immunity test 量度继电器和保护装置 第22-4部分:电气骚扰试验 电快速瞬变/脉冲群抗扰度试验 |
![]() Measuring relays and protection equipment - Part 22-5: Electrical disturbance tests - Surge immunity test 量度继电器和保护装置 第22-5部分:电气骚扰试验 浪涌抗扰度试验 |
![]() DC filter capacitors and neutral bus surge capacitors for HVDC transmission system 高压直流输电系统用直流滤波电容器及中性母线冲击电容器 |
![]() Specifications for aerophotogrammetric field work of 1:5 000 1:10 000 topographic maps 1:5 000 1:10 000 地形图航空摄影测量外业规范 |
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