支承弧门门叶的传力结构部件。形如“两臂”。
n. bracket
misc. support arm ; hub spider
起重机的长支臂功能像我们的手臂。
对弧形闸门支臂结构的静、动力屈曲进行了分析。
The structural buckling of radial arms both static and dynamic was analyzed.
他进入其中一台，检查支臂上的触手状态正常后，用它的支臂将通往深渊的门开启。
He got into one, checked that the claws on its limbs were in good function, and used its arm to unseal the door into the Pits.
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