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单词 disc harrow
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disc harrow
disc harrow n. [ < disc n. + harrow n.1] Agriculture a harrow bearing rows of sharp-edged, slightly concave metal discs to break up the soil.
ΚΠ
1858 J. Slight & R. S. Burn Bk. Farm Implements ii. §3 The Iron-web or Disc-Harrow is a late invention by the ingenious and indefatigable Mr Smith, late of Deanston, for the purpose of covering-in grass.
1891 R. Wallace Rural Econ. Austral. & N.Z. xix. 270 The Disc-Harrow..with its saucer-shaped discs strung on two axle-shafts.
2003 Tractor & Machinery Oct. 85 (caption) Parmiter Force 8 disc harrows (which either mount or trail).
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更新时间:2024/12/24 1:19:14