erratic是什么意思

双语用例

• Imports of raw cotton only gradually took up the slack-and then only in quite erratic fashion.

• One arose from strong vortex motions near the trailing edge of a device, and the other arose from erratic cross-stream movements of the flow pattern.

• The mode amplitude eventually settles into a train of erratic oscillations.

• For instance, the arrival of car-carrying ships is erratic and difficult to predict.

• In general, both voiced and voiceless obstruents favor glide absence; where this is not the case, the pattern is erratic.

• Here the concrete system was a radar circuit that exhibited erratic relaxation oscillations.

• Other people may have more erratic growth records with their data points scattered widely from the underlying true trajectory.

• The output-money models are only slightly better than the univariate models, and their event-probability forecasts from the late eighties onward are erratic.