Membrane materials are two dimensional orthotropic materials, without any resist capacity for lateral loads.Stiffness matrix will show singularity in finite element analysis.是什么意思_Membrane materials are two dimensional orthotropic materials, without any resist capacity for lateral loads.Stiffness matrix will show singularity in finite element analysis.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句