| 释义 |
Johnson bar U.S.|ˈdʒɒnsən bɑː(r)|
[Origin unknown.]
A long heavy lever used to reverse the motion of a steam locomotive. Also transf. (see quot. 1971).
1930Railroad Man's Mag. II. 471/1 Johnson bar, reverse lever on a locomotive. 1943Railroad Mag. XXXIV. 58/1 He jerked two short ones from his chime, eased the Johnson bar down to the first corner and dropped his left hand on the throttle. 1959P. Ransome-Wallis Conc. Encycl. World Railway Locomotives 508 Johnson bar, reversing lever. 1971M. Tak Truck Talk 93 Johnson bar, the emergency brake handle. |