| 摘要 |
<p>The cover, designed for reinforcing elements used to connect two separate cast concrete structures in civil engineering, is in the form of a box with two main faces (2, 12), one of which has holes for the reinforcing elements, and two side faces (3, 4) joining the main faces. The box is made from twin-wall polypropylene with its channels running parallel to the longer dimensions of the main and side faces; it can also have additional panels (50, 51) against the side faces.</p> |
