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A Balancing Valve is used to regulate and measure the rate of flow of water.
平衡阀一般用来控制和调节介质流量。
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In a photoconductive cell, LIGHT is used to regulate the flow of current.
在光电导器件中，光用来调节电流。
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In a photoconductive cell, LIGHT is used to regulate the flow of current.
在光电导器件中，光用来调节电流。
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