However, the detailed transient flow field, the originating mechanism and the potential application of unsteady tip clearance flow are unclear or not enough understood to date.
然而到目前为止，这种非定常波动的基本流动特征，形成机理及其潜在的应用前景都不够清楚。
The date when the customs release the goods shall be the day when the transporting vehicle which carries the export goods completes the customs clearance formalities.
海关放行货物之日指装载出口货物的运输工具办结海关手续之日。
You may pick up your visa within 90 days from the date of clearance shown above.
您可以在上列调查结束日起90天之内领取签证。
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