材质 
ST2.2
0.8
0.8
4.5
4.1
0.3
3
2.86
3.16
2.2
0.1
2.24
2.1
1.63
1.52
ST2.9
1.1
1.1
6.4
5.9
0.4
4
3.82
4.27
3.2
0.1
2.9
2.76
2.18
2.08
ST3.5
1.3
1.3
7.5
6.9
0.5
5
4.82
5.36
3.8
0.1
3.53
3.35
2.64
2.51
ST4.2
1.4
1.4
8.5
7.8
0.6
5.5
5.32
5.92
4.3
0.2
4.22
4.04
3.1
2.95
ST4.8
1.6
1.6
10
9.3
0.6
7
6.78
7.55
5.2
0.2
4.8
4.62
3.58
3.43
ST5.5
1.8
1.8
11.2
10.3
0.8
7
6.78
7.55
6
0.2
5.46
5.28
4.17
3.99
ST6.3
1.8
1.8
12.8
11.8
1
8
7.78
8.66
6.7
0.3
6.25
6.03
4.88
4.7
ST8
2.1
2.1
16.8
15.5
1.2
10
9.78
10.89
8.6
0.4
8
7.78
6.2
5.99
ST9.5
2.1
2.1
21
19.3
1.4
13
12.73
14.16
10.7
0.4
9.65
9.43
7.85
7.59