unsteady,unstable ,unfixed.如何区分呢

unsteady,unstable ,unfixed.如何区分呢 unsteady和unstable区别形容什么不稳定用unsteady?形容什么不稳定用unstable?有没有抽象和不抽象之分?说nation不稳定用哪个?为什么? Unstable与Unsteady有什么区别?最近做一道题,大概是这样的：Politically these nations tend to be very________,with very high birth rates but poor education and very low levels of literacy.unstable reluctant rational unsteady我已经 UNSTABLE怎么样 求助英语词汇unsteady的名词形式, a black,venomous,unsteady glance是一种怎样的眼神? 美国大学物理题Problem 1.An unstable Pu-­‐240 nucleus (mass 240.002 u) is at rest when it fissions into two Ag-­‐120 nuclei (mass 119.893 u) which then fly off far from each other.Find the final kinetic energy of one Ag-­‐1 U, u u u U U u 龟兔赛跑 世纪复赛 UNSTABLE FABLES TORTOISE VS HARE怎么样 Divx is not right product to handle because of unstable price. 请翻译下:Have populations that are unstable been in response to climate conditions? Have populations that are unstable in response to climate conditions这句话结构应该如何分析