... 开孔 scallop 开口补板 plate collar 开口导索器 open chock ...
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plate collar finstube 套片管
size of collar plate 补板尺寸
WELDING-ON COLLAR LOOSE PLATE FLANGE 平焊环松套法兰
collar plate reinforcement 环口板加固
·2,447,543篇论文数据，部分数据来源于NoteExpress
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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