| 单词 | pointing door |
| 释义 | > as lemmaspointing door pointing door n. one of a pair of sluice doors which close against each other to form a point, so as to resist the pressure of the water. ΘΚΠ the world > the earth > water > lake > pool > [noun] > artificially confined water > contrivance for impounding water > gate, lock, or sluice > other parts of apron1721 pointing door1744 penstock1763 lock seat1787 rymer1794 trip-sill1905 1744 J. Grundy Scheme for Restoring & Making Navigation River Witham 35 There will be a Necessity for the following stop sluices, with pointing Doors next to the River. 1795 J. Phillips Gen. Hist. Inland Navigation (rev. ed.) Add. 178 A new sea sluice, with pointing doors to sea and land. 1941 Geogr. Jrnl. 97 219 The lodes are fitted either with locks or with timber pointing doors where they enter the main river system. 2001 Inland Waterway Assoc. Bull. Aug. The Environment Agency has announced the replacement of the guillotine gates at Upper Wellingborough and Higham Ferrers Locks on the River Nene, with the more conventional ‘pointing door’ gates. < as lemmas |
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