high-low signal selector 高低信号选择器
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The Model 90 low pressure and Model 91 high pressure Selector Relays are designed to select the lower or higher of two signal pressures to provide a continuous output pressure to a control device.
示范90低压91高压模型选择继电器的设计选择较低或两个信号的压力较高,以提供持续的输出压力的控制装置。
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