|
Figure 2
(Left) A model of a 21 screw axis. (Middle) A model of a 41 screw axis. (Right) A model of a 63 screw axis. |
Open
access

|
Figure 2
(Left) A model of a 21 screw axis. (Middle) A model of a 41 screw axis. (Right) A model of a 63 screw axis. |