knotless yarn无结纱
knotless net无结节网;[水产] 无结网
knotless netting无结网片;无结节网片
knotless joining无结捻接
knotless mesh无结节网目
warp knitted knotless net经编无结网
direction in knotless netting无结网方向
Knotless net making machine结网机