| 释义 |
▪ I. mould-board1|ˈməʊldbɔəd|
Forms: α. 6 moldbo(o)rde, 7 mould bord, 8– mold-, mould-board; β. 4 molebrod, 6 moulebord, 7 moleboord.
[f. mould n.1 + board n. Cf. Du. molbord, and next word.]
The board or metal plate in a plough, which turns over the furrow-slice. Also attrib., as mould-board clout, mould-board plough.
α1508Test. Ebor. (Surtees) VI. 62 Item..Willelmo Farechild xij le moldboordes. 1688R. Holme Armoury iii. 333/1 The parts of a Plow..The Mould Board. 1765A. Dickson Treat. Agric. (ed. 2) 209 The curved mold-board, by turning the earth of the furrow suddenly by the fore part of it, meets with more resistance than the common mold board. 1805R. W. Dickson Pract. Agric. (1807) I. 5 Giving..to the mould-board that kind of hollowed-out and twisted form which..tends to lessen friction. Ibid. Plate ix, The mould-board hooks. 1808W. H. Marshall Rev. Rep. to Board Agric. from N. Eng. i. 79 The seed is covered in by going once over with a light harrow, or..by a double-mould-board-plough. 1858Trans. Illinois Agric. Soc. III. 366 A bull-tongue or shovel plow put to the same depth, will raise better corn than a mouldboard plow. 1902Lubbock (Ld. Avebury) Scenery Eng. 475 The ridge of soil raised by the mould⁓board of the plough. 1971Power Farming Mar. 31/1 There is a definite place for machines of this type to replace the mouldboard plough under certain circumstances.
β1395Cartular. Abb. de Whiteby (Surtees) 618 It. pro ix molebrodclowtys, iiis. xd. 1583Wills & Inv. N.C. (Surtees) II. 80 A hundreth heads and shares, moulebords [printed moutebords], spades. 1610Healey St. Aug. Citie of God (1620) 542 The plough may not lack other instruments, e.g. the culter,..the mole-boord [etc.].
▪ II. ˈmould-board2
[mould n.3 or mould v.2]
1. Founding. = moulding-board 3.
1875Knight Dict. Mech.
2. One of the boards forming a ‘mould’ for concrete: see mould n.3 2 e.
1881F. Young Every Man his own Mech. §1251 These mould-boards should be of good pine wood, not less than 1 in. in thickness. |