摘要
Abstract
In view of the disadvantages of chain transmission such as poor stability, large operating resistance, noise pollution, and difficulties in maintain, the paper introduces a environment-friendly chain adopting the external roller struc-ture to meet the requirements on noise reduction, energy conservation, and maintenance free.关键词
滚子链条/外置滚轮/节能/免维护Key words
roller chain/external roller/energy-saving/maintenance-free分类
机械制造
