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单词 breadth line
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breadth line
breadth line n. Nautical and Shipbuilding (now historical) a curved line drawn on the plan of a ship which runs lengthways along the vessel, intersecting the hull at its broadest points; (also) a notional line in a ship representing this.Cf. top-breadth line n. at top n.1 and adj. Compounds 2a.
ΚΠ
c1620 Treat. Shipbuilding (modernized text) in W. Salisbury & R. C. Anderson Treat. Shipbuilding & Treat. Rigging (1958) 24 The perpendicular of the breadth line at S will be to the depth at P as 9 to 8.
1850 J. Greenwood Sailor's Sea-bk. 101 Breadth sweep, a term applied to the radius of the arch which forms part of the shape of a ship's body at the Breadth Line.
2001 A. Nelson Tudor Navy vi. 89/2 Below the breadth line on the completed ship ran a large wale made of a thick plank of timber fastened to the stem and rear frame to strengthen the ship.
extracted from breadthn.
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