80oz是多少lb？
80oz = 5lb
是5lb，所以说成5lb也没问题——四舍五入的误差在0.5%以内。
反过来，80lb是多少oz？
80lb = 1,280oz
计算公式: lb = oz × 0.0625
该数值前后的 oz → lb
35 oz2.1875lb
40 oz2.5lb
45 oz2.8125lb
50 oz3.125lb
55 oz3.4375lb
60 oz3.75lb
65 oz4.0625lb
70 oz4.375lb
75 oz4.6875lb
80 oz5lb
85 oz5.3125lb
90 oz5.625lb
95 oz5.9375lb
100 oz6.25lb
105 oz6.5625lb
110 oz6.875lb
115 oz7.1875lb
120 oz7.5lb
125 oz7.8125lb
130 oz8.125lb