Path | Total length of screw passage ( ± s, mm, n = 100) | Thickness of the first narrow place ( ± s, mm, n = 100) | Thickness of the second narrow place ( ± s, mm, n = 100) |
---|---|---|---|
A | 140.6 ± 5.9 | 17.3 ± 3.1 | 23.6 ± 2.6 |
B | 138.1 ± 6.4* | 14.3 ± 2.4** | 12.8 ± 3.5*** |
C | 118.9 ± 7.3▲ | 17.2 ± 2.7▲▲ | 22.8 ± 4.6▲▲▲ |
D | 139.1 ± 5.6△ | 15.7 ± 2.8△△ | 20.5 ± 2.8△△△ |