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单词 rising square
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rising square
rising square n. Obsolete a square used in marking the heights of the floor timbers of a ship.
ΚΠ
1754 M. Murray Treat. Ship-building & Navigation ii. ii. 142 Shew in what manner the timbers are moulded after they are laid down in the mould loft, by a rising square.
1805 Shipwright's Vade-mecum 126 Rising square, a square used in whole moulding, upon which is marked the height of the rising line above the upper edge of the keel.
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更新时间:2024/12/23 2:31:51