| 释义 |
ˈrack-bar
1. Mech. [f. rack n.2 6.] A bar fitted with a rack or racks.
a1824A. Scott in Trans. Highl. Soc. (1824) VI. 31 The teeth of these two spur-wheels are to work..into the teeth of the rack-bars. 1879Cassell's Techn. Educ. IV. 395/1 A strong semicircle of cast iron, with which the telescope is connected by a rack-bar.
2. Naut. [f. rack v.3] (See quot.)
1867Smyth Sailor's Word-bk., Rack-bar, a billet of wood used for twisting the bight of a swifter round, in order to bind a raft firmly together. |