短語詞組短語beam element on elastic foundation 彈性地基梁單元circular beam on elastic foundation 彈性地基曲梁beam on elastic foundation analogy 彈性地基相似梁winkle beam on elastic foundation 文克爾彈性地基梁vertical beam on elastic foundation 豎向彈性地基梁法beam on elastic foundation method 彈性地基梁法beam on nonlinear elastic foundation 非線性彈性地基梁beam on visco -elastic foundation 粘彈性地基梁 返回 beam on elastic foundation