| 释义 |
big hole
noun- the emergency stop position on a railway air brake US, 1931
- — Norman Carlisle, The Modern Wonder Book of Trains and Railroading, p. 259, 1946
- in trucking, the position of the gear shift with the most gear combinations US, 1942
- — Montie Tak, Truck Talk, p. 12, 1971
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