在这种情况下，顶极群落会是最脆弱和最不稳定的，因为它们可能需要数百年才能恢复到顶极状态。
In that case, climax communities would be the most fragile and the least stable, since they can require hundreds of years to return to the climax state.
这支队正处于赛季中期的不稳定状态。
这种原子通过释放射线从不稳定状态变到更加稳定的状态的过程被称为核衰减或放射。
The process by which an atom changes from an unstable state to a morestable state by emittingradiation is called radioactive decay or radioactivity.
应用推荐