The details of the flow in tip region were predicted under different clearance scale and the condition of both stationary and rotating hub.

对于不同大小的间隙及环壁静止与旋转的不同壁面条件，揭示了叶顶区流动的细节。

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In this paper, the influence of tip leakage flow on the 3-d viscous flow field is investigated for different blade tip gap shapes under the condition of rotating hub or stationary hub.

本文针对几种不同形态的叶栅顶部间隙，在环壁转动与静止的不同情况下，研究间隙内的泄漏流动对三维粘性流场的影响。

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The Sun is the hub of a huge rotating system consisting of nine planets, their satellites, and numerous small bodies, including asteroids, comets, and meteoroids.

太阳是一个巨大的旋转系统的中心，这个旋转系统由九大行星、它们的卫星和无数的小天体组成，包括小行星、彗星和流星体。

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At the hub sits the structure's brain: Mr Gross, in a rotating chair, stroking a virtual white cat.

ECONOMIST: Johnny Appleseed.com