例句與造句

1. The equipment is designed to perform the basic functions of railway signalling apparatus by controlling the interlocking of signals, so that correct distances are maintained between trains that follow or cross or approach each other.
2. In addition, there was increasing pressure to equip trains with continuous brakes, to install interlocking of signals and the block system of signalling; all of these initiatives required considerable expenditure and the P & TR did not have the money.
3. It's difficult to find interlocking of signals in a sentence. 用interlocking of signals造句挺難的