电路自动切换
automatic circuit switching
电路自动设计
automatic design of circuits
Automated circuit design
电路自动优化
circuit auto-optimization
轨道电路自动站间闭塞
automatic station block with track circuit
摩斯电码自动操作
automatic Morse code operation
微电子交流计数电码自动闭塞
micro computer automatic block system with AC counting code track circuit
五单位电码自动发报机
five-unit code automatic transmitter
线性集成电路自动测试仪
linear integrated circuit automatic tester
闪电电流
Lightning discharge current
闪电电流磁检示器
magnetic detector for lightning currents
闪电电流幅值
lightning current amplitude