| 摘要 |
The articulation between the members (10,12) is formed by stud, held in the member (12) whose head (16) is inserted in the socket (32) in the member (10). The socket (32) is closed by the cap (36) which has a flat surface (38) and a rim (40) which is a tight fit in the annular space (40). The assembly is closed by the cap (42) fitted onto the member (10). The cap (36) may be omitted, its function being performed by a suitably shaped cap (42) |
