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农学
上纲
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上纲
结缚在网衣上方边缘或网口上缘的纲索。是渔具的重要构件。其作用是使网衣上方或网口获得一定形状和尺寸,并承受一定的外力。常见的上纲包含网衣上方边缘为结缚浮子而装配的纲索,称为浮子纲;以及为增加网衣上方边缘强度的纲索,称为上缘纲。
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tracking shot
tracking system
tracking telescope
tracking velocity
track inspection
track inspection car
track installation measurement
track keeping
track length method
trackless drift
trackless rubber-tyred vehicle
track maintenance
track of subsatellite point
track of Summer Paralympics
trackpad
track photograph
track photometry
track pitch
track placement
track population
track quality index
track reconstruction
track scale
track seeking
track seeking, seek
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更新时间:2026/2/22 13:57:55