| 摘要 |
<p>The body has a pipe (13) for taking up sluice skin from a sewage channel and a rope (17) with a loop (19) fastening the sluice skin growth body in the sewage channel. A cover is firmly connected with the pipe. The pipe has a rough surface that is roughened by sand-blast, grinding, or brushing. The pipe has a set of macroscopic uprisings, slots, and a set of openings that are round and angular. The pipe is formed as a three-dimensional body and an end of the body is closed by the cover with a tip (21).</p> |
