At last, the productivity predicting model of the high-pressure packing sand-control well with the transitional zone is established based on the fluid mechanics in porous medium.

最后，根据渗流力学原理建立了更加完善的高压充填防砂井产能预测模型。

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He said he learned to be cool under pressure while a teenager, when he was a production-line supervisor at a tomato-packing factory.

WSJ: Johnson Helped Turn Railroad Into Conglomerate