permissive signal

网络释义

1.	容许信号第一批：铁路信号专业词汇... ... 434 人为故障 human failure 435 容许信号 permissive signal 436 熔断器断丝 fuse burn-out ... bbs.railcn.net
2.	容许号志机 http:... ... "容许速率"," Permissive speed" "容许号志机"," Permissive signal" "容许运转速度"," Permissible running speed" ... www.guandang.com

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