| 摘要 |
<p>Spikes on pneumatic tyres for motor vehicles are forbidden in some countries but. have been proved to be indispensable in Scandinavian countries. A massive spike (10) comprises rivet (11), the flange (12) and the point (13). The surface layer of the point is made of a harder material e.g. cemented carbide (14) pref. so its wear rate equals that of the surrounding tyre rubber other opt. materials are e.g. ceramics or fibre materials.</p> |
