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单词 screw gill
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screw gill
screw gill n.
ΚΠ
1839 Bradford Observer 27 Apr. 100/4 New and valuable worsted and silk machinery, comprising..1 Screw Gill Frame and 2 Sets of Gills [etc.].
1841 Leeds Mercury 9 Oct. 8/5 All the truly important and valuable flax spinning and preparing machinery, stock-in-trade and effects, viz:..1 Cone Roving Frame, Screw Gills, 36 Spindles, [etc.].
1917 Textile Amer. Apr. 25/2 In consequence of the high speed at which these machines run screw gills are never used in drawing heads of this kind.
2002 L. Hunter in W. S. Simpson & G. H. Crawshaw Wool vi. 170 Very few screw gills are now manufactured, chain gills dominating the market.
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