基本解释箱梁同根派生 英汉例句Keywords suspension bridge;construction control;steel boxbeam;temperature stress;saddle pushing;frequent short steps;virtual lamina element;suspender cable;tangent point; 悬索桥;施工监控;钢箱梁;温度应力;索鞍顶推;小步快跑;虚拟层合单元;吊索;切点;