手竿钓鱼时，人鱼拔河、断线跑鱼的事经常发生。我试制了一种放线器，经济实惠、方便灵活，在进到大鱼时既可防止折等断线，又可避免鱼竿下水捞辛之苦。现将它介绍给广大约友。一、材料1．直径15毫米、长对一如毫米硬塑料管（或硬电线套管）l节。2长25－4米国松紧带1根。... Hand fishing rod, mermaid tug of war, fish off the wire often happen. I trial a release line, affordable, convenient and flexible, into the big fish can prevent compromise broken line, but also to avoid the pain of fishing rod fishing. It is now introduced to the majority of friends. First, the material 1. Diameter 15 mm, long pair mm hard plastic pipe (or hard wire casing) l section. 2 long 25-4 meters a country elastic. ...