80rod是多少m？
80rod = 402.336m
是402.336m，所以说成402m也没问题——四舍五入的误差在0.5%以内。
反过来，80m是多少rod？
80m = 15.9071rod
计算公式: m = rod × 5.0292
该数值前后的 rod → m
35 rod176.022m
40 rod201.168m
45 rod226.314m
50 rod251.46m
55 rod276.606m
60 rod301.752m
65 rod326.898m
70 rod352.044m
75 rod377.19m
80 rod402.336m
85 rod427.482m
90 rod452.628m
95 rod477.774m
100 rod502.92m
105 rod528.066m
110 rod553.212m
115 rod578.358m
120 rod603.504m
125 rod628.65m
130 rod653.796m