| 单词 | centre of cavity |
| 释义 | > as lemmascentre of cavity ΚΠ 1777 W. Hutchinson Treat. Pract. Seamanship 30 The centre of motion of a ship, depends upon the places of the centre of cavity and gravity. 1813 E. M. Blunt Seamanship 73 The centre of cavity varies with every inclination of the ship, because that depends upon the shape of the body immersed. 1850 J. Greenwood Sailor's Sea-bk. 104 Centre of Cavity, or of Displacement, the centre of that part of the ship's body which is immersed, and which is also the centre of the vertical force that the water exerts to support the vessel. < as lemmas |
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