| 单词 | rack rail |
| 释义 | > as lemmasrack rail rack rail n. a toothed rail which engages the teeth of a cogwheel, esp. on the locomotives of a rack railway. ΘΚΠ society > travel > rail travel > railway system or organization > [noun] > track > types of rail bridge rail1759 rack rail1829 light rail1836 saddle rail1837 T rail1837 rack1847 foot rail1856 tooth-rail1862 U-rail1868 strap-rail1874 check-rail1876 cog-rail1884 1829 Niles' Weekly Reg. 16 May 186/2 Blenkinsop's locomotive engine, which operated by means of cog-wheels and rack-rails, was invented and applied on the Leeds rail road in 1811. 1918 Chambers's Jrnl. Jan. 13/1 See hazardous bridges being built, and the rack-rail employed to surmount steep gradients. 2001 Xinhua Econ. News Service (Nexis) 27 June Railway or tramway track construction material of iron or steel, the following: rack rails, switch blades, crossing frogs, point rods and other crossing pieces. < as lemmas |
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