a device on a train which applies the brakes when engaged by a projection on the track, if the train is passing a signal set at danger.
| 单词 | θ202818 |
| 释义 | society > travel > rail travel > rolling stock > [noun] > locomotive > automatic safety braking device (1) tripcock1906 a device on a train which applies the brakes when engaged by a projection on the track, if the train is passing a signal set at danger. |
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