| 摘要 |
PROBLEM TO BE SOLVED: To lighten a fish farming net frame, to make it easy to handle the frame, to enhance its durability by making it easy to get to fit the swell of the sea surface and not to act constrained stress on a fish farming net and/or the frame therefor. SOLUTION: This fish farming net frame 2 for suspending the fish farming net 1 features being composed mainly of piping members each made of FRP (fiber reinforced plastics).
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