1. Trawl net, purse seine, Fish Pond Nets, set net, light net, drag net, golf net, used for catching and breeding in deep sea, Shallow sea, Inland river, Inland Lake and used for sport net.

2. Any trawl net including trawl, pair trawl or shrimp trawl net.

3. More than 80 kinds of trawl net currently used in the Yellow Sea and Bohai Sea were chosen through extensive investigation.

4. In trawl fishery, there are many factors affecting the fishing effort of which, the vessel size, actual catching time and the improvement of trawl net are the main factors.

5. Therefore, we can get the approximate value by the beam shrimp trawl net shape and the results match the tension of warp from the experiments results.

6. In the latter case, there is no such as correlation. The most prominent characteristics of the fluorescent trawl net is that its operational efficiency ...