中层拖网 middle layer trawl; midwater trawl; mid-depth trawl; meso-layer trawl; 中层拖网作业 pelagic trawling; .
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remotely-controlled midwater trawl 遥控中层拖网
remotely controlled midwater trawl 遥控中层拖网
midwater pair trawl 中层双拖
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