开合桥

开合桥 [kāi hé qiáo]

1. ■ folding bridge; leaf bridge; bascule bridge; draw bridge

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常用词组

1. ■ 开合桥孔 draw span;

2. ■ 开合桥跨 pivot span;

3. ■ 开合桥跨墩 pivot pier