Effect of impeller of different blade profile on the highest pressure point, optimum operating point, shape of pressure curve and efficiency of the fan were analyzed.

分析了不同叶片型线叶轮对风机的最高压力点、最佳工况点、压力曲线形状及效率的影响，同时探讨了风机不同叶片型线的工程实用价值。

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The effect factors such as the buried channel junction depth and substrate doping concentration on the CCD's optimum operating point and maximum charge capacity are analysed.

分析计算了埋沟结深、衬底掺杂等对CCD最佳工作点及最大电荷处理量的影响。

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Since the response of a HVDC plant dynamically changes with variations in the operating point, a PI controller performance is far from optimum.

由于HVDC系统的响应随运行状态的变化而改变，使得电压互感器控制器的性能很难实现最优。

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