midwater gill net 中层刺网

aimed midwater trawling 瞄准中层拖网捕捞

midwater fishery 中层渔业

midwater fishes 中层鱼类

midwater farming 中层养殖

midwater trawl [水产] 中层拖网

Midwater fishing 变水层作业

Midwater scorpionfish 深海鲉

midwater pair trawl 中层双拖

remotely-controlled midwater trawl 遥控中层拖网