短語詞組短語lumped -mass analysis 集中質塊分析lumped d mass matrix 集縂質量矩陣multi -lumped-mass system 多自由度集中質量系統(tǒng)Elements Related to Lumped -Mass Systems 與質點系統(tǒng)相關的元素cantilever lumped -mass flexible-shear model 彎剪模型the lumped mass method 用集中質量法lumped mass finite element 質量集中有限元 返回 lumped mass