The fitting of a heavy, three valve-cap on the Macondo oil well on July 15th marked the opening of just such a new act in the drama of the Deepwater Horizon, its loss and its aftermath.

7月15日，Macondo（马贡多）油井装上了一个沉重的三阀井盖，标志着深水地平线号这场戏剧（包括损失和后果）新的一幕的开始。

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Fitting valve position feedback on manual valves now also becomes a more attractive option with the size and cost of the open solution.

现在由于开放式解决方案的尺寸和成本的优势，在手动阀上装配位置反馈也变得更有吸引力。

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Moreover, this paper puts forward an adaptive method of control valve based on open-loop and enhances measure accuracy through curve fitting method.

同时，本文提出一种基于开环的阀门开度自适应控制方法，通过在线曲线拟合的方法提高阀门控制的精度。

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