| 单词 | pole piece |
| 释义 | > as lemmaspole piece pole piece n. (a) a heavy strap which attaches the end of a carriage-pole to a draught animal's collar; (b) Roofing a ridge pole (rare). ΘΚΠ the world > food and drink > farming > animal husbandry > general equipment > [noun] > harness of draught animal > collar > part of hame13.. tee1494 bearing gear1616 pole piece1619 pole chain1725 afterwale1833 oxbow key1882 barge1908 society > inhabiting and dwelling > inhabited place > a building > parts of building > framework of building > [noun] > roof-beam > rafter > ridge-pole firstOE first-roofOE rigging tree1589 ridge piece1611 ridge tree1649 ridge pole1657 pole piece1901 1619 in G. Ornsby Select. from Househ. Bks. Naworth Castle (1878) 108 For a paer of duble cotch rains and 2 poolpeseis. 1794 W. Felton Treat. Carriages I. 221 Pole pieces, Are the straps which couple the horses to the pole, and are also regulated by the size and weight of the carriage. 1901 J. Black Illustr. Carpenter & Builder Ser.: Home Handicrafts 22 Deal rafters..the lower ends of which rest on the wall plates,..and the upper extremities..abut on the ‘ridge’ or ‘pole piece’. 1983 M. Stansfield New Herdsman's Bk. i. 11 When fitting a halter it is best to put the poll piece over the ears first, before tightening the loop around the nose. pole piece pole piece n. a mass of iron forming one end of an electromagnet, through which the magnetic flux is concentrated and directed. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > [noun] > magnet > end section pole piece1856 1856 Philos. Trans. (Royal Soc.) 146 161 The sliding pole-pieces were of square iron, and presented either pointed terminations towards each other, or two flat faces. 1962 Newnes Conc. Encycl. Electr. Engin. 337/1 The magnets..consist of a circular yoke of cast iron to which inwardly projecting laminated main pole pieces are bolted. 1989 A. C. Davies Sci. & Pract. Welding (ed. 9) I. iv. 188 The gap between pole pieces and rotating armature must be kept as small as possible. < as lemmas |
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