| 摘要 |
A first member is provided with an elongated recess which has one open end, and a first throughgoing passage which extends transversely to the elongation of the recess. A second member which is to be connected to the first member is provided with a disc which extends outwardly away from the second member. The disc is adapted to be received in the recess when the second and first members are connected to one another. The disc is provided with a throughgoing passage so arranged as to communicate and bound with the first passage of the first member a throughgoing channel. A wedge-shaped element is closely receivable in the channel so as to arrest the second member on the first member and prevent any movement of these two members relative to one another. |
