| 单词 | water ballast |
| 释义 | > as lemmaswater ballast water ballast n. water carried in a tank or compartment and used as ballast on a boat or ship, or (later) an aircraft. ΘΚΠ society > travel > travel by water > vessel, ship, or boat > equipment of vessel > other equipment of vessel > [noun] > ballast lastage1440 ballast1486 ballasting1508 kentledge1625 water ballast1759 shifting ballast1785 pig of ballast1789 pig ballast1797 sandbag1834 stiffening1894 1759 Gentleman's Mag. 29 Suppl. 613/1 The common ballast..is liable to, and frequently does, shift, but the water ballast cannot. 1882 Pop. Sci. Monthly Dec. 214 The spaces between the two bottoms [of the ship]..form convenient chambers for water-ballast. 1901 Scotsman 14 Mar. 6/8 The boat..has a water ballast tank. 2001 Today's Pilot Feb. 62/3 (caption) The Minimoa was..the first sailplane to carry water ballast. < as lemmas |
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