材质 
1/2
13
0.515
0.482
0.323
0.302
1.126
0.89
0.32
0.5
5/8
11
0.642
0.605
0.403
0.378
1.313
1.102
0.43
0.6
3/4
10
0.768
0.729
0.483
0.455
1.58
1.338
0.53
0.65
7/8
9
0.895
0.852
0.563
0.531
1.88
1.535
0.61
0.72
1
8
1.022
0.976
0.627
0.591
2.158
1.771
0.7
0.8
1-1/8
7
1.149
1.098
0.718
0.658
2.375
1.991
0.8
0.9
1-1/4
7
1.277
1.223
0.813
0.749
2.76
2.213
0.9
1
1-3/8
6
1.404
1.345
0.878
0.81
2.91
2.434
1
1.1
1-1/2
6
1.531
1.47
0.974
0.902
3.16
2.655
1.1
1.2