| 单词 |
scuffing |
| 释义 |
scuffing, vbl. n.
[f. scuff v. + ing1.]
1. The action of brushing against or scraping: see scuff v.
1883Stallybrass tr. Grimm's Teut. Myth. III. 967 A man..hears at midnight a scuffing of shoes. 1895Century Mag. Aug. 571/1 There was a scuffing of many feet on the beach below.
2. (See quot. 1928.)
1928Holt & Cooke in Bur. Standards Jrnl. Res. I. 25 A considerable part of tread wear may be caused by the slipping of portions of the tread over the road surface in changing from the normal to the deflected condition and vice versa. This might be termed a scuffing action. 1955W. H. Crouse Automotive Chassis & Body vi. 157 High-speed operation causes much more rapid tire wear because of the high temperature and greater amount of scuffing and rapid flexing to which the tires are subjected.
3. Engin. The roughening of a metal surface designed to rub against another when the lubrication is inadequate to prevent local fusion and tearing of the two surfaces.
1941Engineering 11 Apr. 286/1 Should a local breakdown of the lubricating-oil film occur, the two surfaces may momentarily become fused. With the reciprocating movement of the parts, a shearing action takes place,..causing disruption of the surfaces. An example of this effect, which is known as piston-ring ‘scuffing’, is seen in Fig. 1, which shows the surface of a scuffed piston ring. 1950Engineering 17 Mar. 310/1 Failure of a gear lubricant to prevent the teeth from making metallic contact may result in destruction of the tooth surfaces by ‘scuffing’, ‘seizing’, or ‘welding’: all different degrees of welding. 1961New Scientist 26 Jan. 218/3 ‘Scuffing’ of valve gear cams and the tappets that run against them occurred. 1966G. W. Michalec Precision Gearing viii. 354 Scoring and scuffing are associated with welding (or seizing) and plastic deformation. |
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