| 单词 | pot sleeper |
| 释义 | > as lemmaspot sleeper pot sleeper n. Railways a circular metal support placed under a railway track (see quot. 1992). ΘΚΠ society > travel > rail travel > railway system or organization > [noun] > track > parts and fittings of rails > sleeper cross-tie1813 sleeper1837 longitudinal1838 transom1838 cross-sleeper1841 railroad tie1847 stringer1848 tie1857 pot sleeper1869 waybeam1880 1869 Sci. Amer. 6 Nov. 292/2 The cast-iron pot sleeper introduced on the Alexandria, Cairo, and Suez Railway, by Mr. R. Stephenson, in the year 1851, receives the unqualified approbation of the local engineers. 1891 R. Kipling Light that Failed xv. 320 Wastage of the Suakin-Berber line,..mounds of chairs and pot-sleepers. 1992 A. A. Jackson Railway Dict. s.v. Pot sleepers, circular iron supports like large inverted saucers used in some countries, without much success, as an alternative to transverse sleepers, to give track stability in sandy soil or to prevent destruction by termites. < as lemmas |
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