stiffened internal ring reinforcement
stiffened internal ring reinforcement
加强内部环加强
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Several strengthening methods, including stiffened internal ring reinforcement, collar plate reinforcement, internal plate reinforcement and chord thickness reinforcement, are introduced here.
本文介绍了几种加固方法，如内置加劲环加固、环口板加固、内置插板加固和主管壁厚加固等。
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