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单词 half-breadth staff
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half-breadth staff
half-breadth staff n. Shipbuilding Obsolete a rod having marked upon it half the length of each beam in the ship.
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society > travel > travel by water > vessel, ship, or boat > shipbuilding and repairing > [noun] > shipbuilding > tools and equipment
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1754 M. Murray Treat. Ship-building & Navigation ii. ii. 144 The half breadth staff, serves to set them to the half breadth.
1797 Encycl. Brit. XVII. 407/1 The half breadth staff may be one inch square, and of any convenient length.
1874 S. J. P. Thearle Naval Archit. (new ed.) I. iii. 55 To correct the frames when they are in place, and keep the ship to the true form, half breadth staffs are made, upon which are marked the half breadths of the ship at the several heads, sirmarks, port sills, etc.
1918 F. F. Pease Mod. Shipbuilding Terms 41/2 Half-breadth staff or rod, a rod having marked upon it the half-length beams of a vessel. The measurements are taken from the half-breadth plan.
extracted from halfadj.
half-breadth staff
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half-breadth staff n. a rod having marked upon it half the length of each beam in the ship (E. H. Knight Pract. Dict. Mech. 1875).
extracted from half-comb. form
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