铝衬钢管轴承

[机] al-fin bearing

lǔ chèn gāng guǎn zhóu chéng ㄌㄨˇ ㄔㄣˋ ㄍㄤ ㄍㄨㄢˇ ㄓㄡˊ ㄔㄥˊ