| 摘要 |
<p>A propagation track for use in contiguous disk bubble devices includes a plurality of spaced dovetail shaped elements which are connected at one end thereof by a track portion (34) which faces in the direction of and is substantially perpendicular to the (1,1,2) axis. The first, third and fifth sides (34,36,41) of the dovetail structure are elongated and also face in the direction of and are substantially perpendicular to the (1,1,2) axis. The remaining sides of the dovetail structure have different orientations, the second side (38) facing in the direction of and being substantially perpendicular to the (2,1,1) axis, and the fourth side (40) facing in the direction of and being substantially perpendicular to the (1,2,1) axis. The orientation of the two cusps (45,49) formed by the first and second sides (34, 38) and the fourth and fifth sides (40, 41) is such that the lines (43, 47) bisecting and pointing towards the cusps are substantially parallel to the (1,2,1) and (2,1,1) axes, respectively.</p> |
