signaling unit 中文意思是什麼
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The kcrc east rail has recently been undergoing a number of improvements including the train refurbishment, station renovations, procurement of new electric multiple unit train sets, installation of new signaling and train controlling systems, etc. these would improve train frequency, safety and passenger comfort
九廣鐵路東鐵最近完成多項改善工程，包括改建車廂、重修車站、購置全新的電動列車、安裝新的燈號設施及火車監管系統等，在火車班次、火車安全度及乘客舒適度等方面提高了服務水平。 -
Network control signaling unit
網路控制發信單位 -
Signaling access unit sau
信令接入單元
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