Air core comes into being because of central minus pressure and goes through the hydrocyclone from the overflow gate to the bottom outlet after the flow field become steady.

其内部由于中心负压而形成空气柱，当流场稳定后，该空气柱从底流口到溢流口贯穿始终。

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Based on the analyses of main characteristic factors which affect the overflow spray-motion and their membership functions, the fuzzy relation matrix from the field data is established.

在分析和给出影响泄洪溅水量的主要特征因子及其隶属函数的基础上，由若干原观资料，建立了泄洪溅水特征因子的模糊关系矩阵。

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Last Sunday, an overflow car park in a grass field adjacent to the site had to be opened to accommodate the stream of traffic even though it was rainy day.

BBC: Ireland's very own 'Northern Rock'