trawl net

Therefore , in the future study , the escape ability and viability of fish and shrimp should be the index of a shrimp trawl net effect of a selective evaluation .

因此，今后的研究过程中，应当将鱼、虾类逃逸后生存能力作为虾拖网网具选择性效果的一个评价指标。

Cod-end , the end of a trawl net which retains the catch and the part of the net where most size-selection takes place .

囊网囊网，在拖网的末端保留捕捉物与部份的网子在那里有大多数的大小选择发生。

Study on Structure and Fishing Method of Selective Shrimp Trawl Net

选择性虾拖网渔具渔法研究

The Application of dBASE ⅲ to the Data Base of Trawl Net

dBASEⅢ在拖网数据库中的应用

Friction and hydrodynamic properties of the ground rope of trawl net

沉子纲的摩擦阻力和水动力特性

Effects of fluorescent trawl net on fish catches in periodic darkness

光暗周期下底拖萤光网作业对鱼类的捕捞效应

Analysis and Discussion on Spanish Cod Trawl Net

关于西班牙鳕鱼拖网渔具的分析与探讨

The most prominent characteristics of the fluorescent trawl net is that its operational efficiency changes with visual performance and visual function variation of the fishes to be caught under the change of natural radiation .

萤光网作业最具特征的是，随自然光照条件变化，其作业效率依渔获种的视觉性能及视觉功能转换状况而发生变化。

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 .

可制作拖网、围网、网箱、定置网、灯光网、拉网、高尔夫球网等等，适用于深海、浅海、内河、内湖的养殖和捕捕捞以及体育用网。

Totally 20 individuals of small cetaceans were incidentally captured from Dongshan Ports during our study . Among them 6 ( 30 % ) were bottlenose dolphins , and they were captured by trawl net ( 2 individuals ) and purse net ( 4 individuals ) .

调查期间从东山港记录到的误捕致死的20头小型鲸类中，6头（占30%）为瓶鼻海豚，分别由拖网和围网捕获。

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 .

在底拖网渔业中有很多影响渔捞努力量的因素，其中船型大小、实际捕捞时间的长短以及网具改进是主要因素。