钢背-锡青铜双金属衬套制造成本低、磨损率小、使用寿命长，可取代全青铜衬套。

Steel backed-tin bronze bi-metallic sleeve can be used to substitute all bronze sleeves due to its low manufacturing cost, better wearing quality and longer service life.

youdao

钢背-锡青铜双金属衬套制造成本低、磨损率小、使用寿命长，可取代全青铜衬套。

Steel backed-tin bronze bi-metallic sleeve can be used to substitute all bronze sleeves due to its low manufacturing cost, better wearing quality and longer service life.

youdao