材质 
M2
0.4
4
3.7
2.6
1.3
1.16
0.7
0.56
0.1
0.5
M2.5
0.45
5
4.7
3.1
1.5
1.36
0.8
0.66
0.1
0.6
M3
0.5
5.6
5.3
3.6
1.8
1.66
1
0.86
0.1
0.7
M3.5
0.6
7
6.64
4.1
2.1
1.96
1.2
1.06
0.1
0.8
M4
0.7
8
7.64
4.7
2.4
2.26
1.51
1.26
0.2
1
M5
0.8
9.5
9.14
5.7
3
2.88
1.51
1.26
0.2
1.2
M6
1
12
11.57
6.8
3.6
3.3
1.91
1.66
0.25
1.4