block signal
A: a fixed signal that lets engineers know if a train can enter a block.
B: a conductive connector used to maintain circuit continuity for track circuits and electrified tracks.
A: a fixed signal that lets engineers know if a train can enter a block.
B: a conductive connector used to maintain circuit continuity for track circuits and electrified tracks.
举一反三
- manual block A: block controlled manually by a person known as a block operator. B: a fixed signal that lets engineers know if a train can enter a block.
- a fixed signal that lets engineers know if a train can enter a block. A: ABS (automatic block system) B: lock C: lock signal
- The Switch block in the Signal Routing block library can be used to implement a piecewise function.
- Track circuits detect__1__if a train is occupying a block.
- Which of the following circuits is used to eliminate a portion of a signal? （ ）.