| 摘要 |
The pipe fitting (6) is squeezed onto the end of a metal pipe (7) by jaws (1,2) connected on one side by a pivot. The free ends of the jaws have hemispherical projections (8) which fit into hemispherical recesses in the ends of jaws (4a,b) of a massive further jaw assembly (4) with a pair of pivots (5). |
