| 单词 | main keel |
| 释义 | > as lemmasmain keel main keel n. Nautical the principal keel of a ship, as distinguished from the false keel and the keelson. ΘΚΠ society > travel > travel by water > vessel, ship, or boat > parts of vessels > body of vessel > bottom or part under water > [noun] > keel and kelson > keel bittemeOE bottomOE keel1352 quiell1582 main keel1769 kelson1831 1769 W. Falconer Universal Dict. Marine at Keel The false-keel, which is also very useful in preserving the lower side of the main keel. 1883 Man. Seamanship for Boys' Training Ships Royal Navy (1886) 10 Q. What is the main keel? A. The principal keel, as distinguished from the false keel, and the keelson. < as lemmas |
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