基本解释[机械工程]马格诺利亚铅基轴承合金英英字典柯林斯英英字典 an alloy used for bearings, consisting largely of lead (up to 80 per cent) and antimony, with the addition of smaller quantities of iron and tin magnolia metal剑桥字典magnolia metal柯林斯字典专业释义机械工程马格诺利亚铅基轴承合金