| 摘要 |
<p>The plastics plaster bar (2) is in two parts (4,6), held together by a nominal fracture zone (7). A soft plastics zone (12) or a plastics strip bridges the fracture zone (7), and holds the bar parts (4,6) together, and also when the fracture zone (7) is broken, gives a curved link between the sections (4,6).</p> |
