The utility model conquers the friction between the backing roll core and axletree, realize self-lubrication, prolong the usage lift of the backing roll core, and improve the efficiency.
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realize self lubrication
实现自润滑
以上为机器翻译结果，长、整句建议使用 人工翻译 。
应用推荐
模块上移
模块下移
不移动