train protection warning system造句

例句与造句

1. Instead, rail operators have begun to install the technologically different _ and cheaper _ Train Protection Warning System.
2. The locomotive was overhauled at the Great Central Railway ( GCR ) to mainline standards which included the fitting of the train protection warning system, overhaul of 70013's automatic warning system and the fitment of OTMR . On the weekend of 3 May & ndash; 4 May 2008, the locomotive hauled its first revenue-earning passenger services since being restored on the GCR's eight-mile route.
3. It's difficult to find train protection warning system in a sentence. 用train protection warning system造句挺难的