The current forms of drug price control and principles of drug pricing leave drug managers a fairly large profit margin in which to fix prices on their own.

现行的药品价格管理形式与定价原则为经营者自主定价提供了较大的利润空间。

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Then, adopting reactive current margin and harmonics as control and protection variable, an expert system was formed to control thyristor switched capacitor.

以无功电流差补值作为控制参量，并以高次谐波电流作为谐振保护信号，由专家系统给出投切无功补偿电容的控制指令。

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Then, adopting reactive current margin and harmonics as control and protection variable, an expert system was formed to control thyristor switched capacitor.

以无功电流差补值作为控制参量，并以高次谐波电流作为谐振保护信号，由专家系统给出投切无功补偿电容的控制指令。

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