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单词 midship frame
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midship frame
midship frame n. the timber or frame in a ship which has the greatest breadth.
ΚΠ
1754 M. Murray tr. H. L. Duhamel du Monceau Elements Naval Archit. 7 in Treat. Ship-building All these [frames of timber] being united together, and secured by cross-bars, form a circular inclosure, that which incloses the greatest space is called the midship frame.
1830 P. Hedderwick Treat. Marine Archit. 247 Set up the tangent-lines at the exact half-breadth of the midship-frame, on each side of the centre-line.
1971 J. Needham Sci. & Civilisation in China iii. 417 Most symmetrical [of hulls] are those in which the master-couple (i.e. the ribs enclosing the greatest area) coincides with the midship frame.
extracted from midshipn.adj.
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