| 摘要 |
The method involves fixing a metallic armature (3) in a form of a socket, at an end of a supporting column (1) by injecting a liquid adhesive through an orifice (5) across the armature. A free space (9) is provided between the supporting column by placing two airtight annular joints (6, 7) on top and bottom of the armature respectively. The joint (7) provides an air-hole (8) at the top of the armature. |
