材质 
1/2
13
0.515
0.482
0.323
0.302
0.875
0.85
0.969
0.32
0.5
5/8
11
0.642
0.605
0.403
0.378
1.062
1.031
1.175
0.43
0.6
3/4
10
0.768
0.729
0.483
0.455
1.25
1.212
1.383
0.53
0.65
7/8
9
0.895
0.852
0.563
0.531
1.438
1.394
1.589
0.61
0.72
1
8
1.022
0.976
0.627
0.591
1.625
1.575
1.796
0.7
0.8
1-1/8
7
1.149
1.098
0.718
0.658
1.812
1.756
2.002
0.8
0.9
1-1/4
7
1.277
1.223
0.813
0.749
2
1.938
2.209
0.9
1
1-3/8
6
1.404
1.345
0.878
0.81
2.188
2.119
2.416
1
1.1
1-1/2
6
1.531
1.47
0.974
0.902
2.375
2.3
2.622
1.1
1.2