instabilityn.不稳定；不安定instability probability失稳概率Instability and failure失稳破坏instability of smoke hyer烟气层失稳instability of employment[经] 职业(雇用)的不稳定instability configuration失稳形态instability haemodynamies血流动力学不稳定instability of fluid flow流动不稳定性instability of deposit body堆积体失稳instability of disturb wave不稳定扰动波instability of natural slope自然坡失稳