“vertical center keelson”的概念、定义、翻译、参考文献-科学参考

单词	vertical center keelson
释义	vertical center keelson [`vǝrd·ǝ·kǝl `sen·tǝr `kēl·sǝn] ^{NAVAL ARCHITECTURE} The lower middle line girder, which, in conjunction with a flat plate keel on the bottom and a rider plate on top, forms the principal fore-and-aft strength member in the bottom of a ship.
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