The characteristic equations for temperature and velocity of air flow in jet main region specification model were put forward and validated in a case study.

提出主流区风口模型计算气流温度和速度的特性公式，并研究其在工程中的实际应用情况。

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The Boeing 747 first flew in 1969, yet it still is the main jet carrying people across oceans.

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Ever so slightly I pulled the nose up in a flare and rolled the jet right on the main wheels.

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Under the David Packard approach, new product lines split off into autonomous units, and scores of disparate operations populated the four main businesses--ink-jet printers, laser printers, servers and PCs.

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