working lever造句

例句与造句

1. The points and signals were worked from a new 21 lever signal box, containing a frame of 17 working levers and 4 spare.
2. New pneumatic signalling between Woking and Basingstoke was provided between 1904 and 1907; the stretch between Farnborough and Woking was brought into use during June July 1907, and included a new signal box at Brookwood, having 35 working levers.
3. It's difficult to find working lever in a sentence. 用working lever造句挺难的