1. Size selectivity of gillnet, which is crucial to fisheries management, stock survey and assessment, is a main subject in research on selectivity of fishing gear.
刺网选择性研究是渔具选择性研究领域中的重要部分，其对于渔业管理、资源调查和评估等都是至关重要的。
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2. Size selectivity of gillnet, which is crucial to fisheries management, stock survey and assessment, is a main subject in research on selectivity of fishing gear.
