frp 4
玻璃钢4
以上为机器翻译结果，长、整句建议使用 人工翻译 。
And the connection strength of the bilge keel of FRP fishing boat was obtained based on the ripping tests of 4 FRP frames.
并根据4种玻璃钢骨架的剥离试验数据，计算出玻璃钢渔船舭龙骨的连接强度。
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Furthermore concrete pipes' crack formula reinforced by FRP Derivation was deduced. 4.
同时推演了FRP加固钢筋混凝土管道裂缝计算公式。
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