词汇 | unsteady |
释义 | unsteady adjective uk /ʌnˈsted.i/ us /ʌnˈsted.i/ moving slightly from side to side, as if you might fall: 摇晃的;站不稳的 She's been in bed with flu, and she's still a little unsteady on her feet.她患流感一直卧床,现在还有些站不稳。 likely to change, in a way that is worrying: The report showed unemployment surging in an already unsteady economy. not smooth or regular: She said how sorry she was in a soft, unsteady voice. A basic check can be done by monitoring a person's pulse for an unsteady beat. Doctors may perceive Seniors as physically unsteady, so bumps and bruises are more easily explained away. He said people now are looking for something to give them peace of mind in unsteady times. Weakness and vulnerability Achilles heel asthenia at a low ebbidiom atonic atony fragile fragility frail glass jaw helpless shakily shakiness shaky sitting duck sitting target weakling weakly weakness weedy wetly You can also find related words, phrases, and synonyms in the topics: Change and changes Rough, irregular and uneven Related wordunsteadily unsteady | American Dictionaryunsteady adjective us/ʌnˈsted·i/ moving or changing, or not firm: She’s been sick, and she’s still a bit unsteady on her feet. Examples of unsteadyunsteady There is one class of unsteady turbulent flows, however, that has been studied in fair detail using moderate to highly sophisticated data, reduction techniques. They performed an extensive set of experiments studying steady and unsteady viscous jet behaviour. We present a model of sedimentation in a subsiding fluvio-deltaic basin with steady sediment supply and unsteady base level. Exact analytical representations are obtained describing self-similar unsteady flows of multiphase immiscible fluids in the vicinity of non-circular, but constant strength, fronts. As another example, consider transport in the vicinity of a single unsteady vortex ring. The interior unsteady flow shows source-like behaviour at the corners. The flow within the duct is taken to consist of a steady mean flow with unsteady acoustic perturbations. The present analyses advance the previous quasi-steady models by being formulated for a fully unsteady flow system, with no time-derivative terms being neglected. This approximation, according to which the unsteady terms in the equations of motion of the flow can be neglected, is adopted here. The driving mechanism results from unsteady coupling between flame structure and acoustic waves through temperature fluctuations. These large-scale instabilities give rise to unsteady flow throughout the inner layer. Whenever the jet impinged on the cavity wall the latter became rough, unsteady and opaque as in the bottom lefthand corner of figure 1 (c). The governing equations in the water are therefore those of unsteady potential flow, while those in the air are of lubrication. The unsteady expansion of an ideal gas into a vacuum is studied in one-dimensional planar and spherical geometries. Economic conditions were unsteady, with several depressions and recoveries, while business organizations were transformed into hierarchical and inclusive corporate structures. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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