| 单词 | rooter plough |
| 释义 | > as lemmasrooter plough b. More fully rooter plough. An implement or machine for loosening the surface of the ground. ΘΚΠ the world > food and drink > farming > tools and implements > [noun] > scarifier scarificator1776 scarifier1794 rooter1810 hash1821 twin1847 rototiller1923 Rotavator1936 1810 Inventory Estate S. E. Butler in Georgia Hist. Q. (1946) 52 217 6 coulters..3 Shear plows..6 rooters. 1836 Farmers' Cabinet 15 Aug. 48/1 Rough and stony ground may indeed be rooted up by the short rooter plough. 1872 C. Stearns Black Man of South i. ix. 90 The ‘turn or shovel plough’..is considerably longer than the rooter, but does not penetrate the ground so far. 1919 A. H. Blanchard Amer. Highway Engineers' Handbk. viii. 433 For breaking up hardpan, old macadam, or other stiff material, a rooter plow..is employed. 1950 N.Z. Jrnl. Agric. Oct. 333/2 At first a small rooter was used which was designed for scarifying pavements and roads and which could be drawn by a 40 h.p. tractor. 1965 G. J. Williams Econ. Geol. N.Z. Pl. xxxix This very pure calcareous material is soft enough to be excavated by rooters, and in consequence can be produced at low cost. 1996 Globe & Mail (Canada) (Nexis) 26 June c3 Motoring around Toronto's core district is never fun, but it's miserable these days—what with the city's huge diggers and rooters and pavement-busters out there, blocking every third downtown thoroughfare. < as lemmas |
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