| 摘要 |
<p>The device has a plate (1), which is carried out such that the device is arranged in a vertical bearing. The plate is provided with an opening (2) for receiving a continuous line, and is made of concrete. The opening has a circle form or polygon form, and is provided with a coating. An edge of the plate is provided with a projection and a recess, which enables the fastening of the plate in its operative position.</p> |
