| 摘要 |
FIELD: commercial fishery. SUBSTANCE: trawl consists of trawl bag made in form of six sections manufactured separately. Each section consists of sweep-net bag and rope portion, cork line and bottom line and cod end. Cork and bottom lines of all sections are provided with hydrodynamic hoisting devices. Upper and lower sections exceed side ones by 10 to 20% over perimeter and lines. EFFECT: more wide opening of trawl. 2 dwg
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