... dial thread indicator 螺纹指示盘 dial time relay 刻度盘式时间继电器 dial underground weigh bridge 字盘式地外衡 ...
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Introduction was made to the composition and working principle of a power-off time delay relay which adopts CMOS digital circuit, digital dial disc for switch setting and without auxiliary power.
介绍了一种采用CMOS数字电路、数字拨盘开关整定、无辅助电源的断电延时继电器的组成及工作原理。
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