unstable

adj.

不稳固的；不坚定的；易变的；反复无常的

unstable state不稳定状态；非稳态

unstable slope不稳定斜坡，不稳定边坡；不稳坡

unstable equilibrium[化]不稳定平衡

unstable combustion不稳定燃烧

1. The hydroperoxides are unstable compounds.
   氢过氧化物是不稳定的化合物。
2. Alternate currents make people feel it's unstable.
   交流电总给人一种不稳定的感觉。

Platelet Activation in Unstable Coronary Disease — NEJM
Specific platelet mediators and unstable coronary artery lesions. Experimental evidence and potential clinical implications.
Arachidonic acid metabolism in polymorphonuclear leukocytes: unstable intermediate in formation of dihydroxy acids
A novel gene containing a trinucleotide repeat that is expanded and unstable on Huntington's disease chromosomes
Continuous control of chaos by self-controlling feedback: stabilization of unstable periodic and aperiodic orbits
Continuous control of chaos by self-controlling feedback: stabilization of unstable periodic and aperiodic orbits
The Mathematical Representation of Wind Speed and Temperature Profiles in the Unstable Atmospheric Surface Layer.
[Comparison of early invasive and conservative strategies in patients with unstable coronary syndromes treated with the glycoprotein...
Evaluation of prolonged antithrombotic pretreatment ("cooling-off"strategy) before intervention in patients with unstable coronary ...
Risk of myocardial infarction and death during treatment with low dose aspirin and intravenous heparin in men with unstable coronary...