The magnetic powder clutch is an excellent characterized component in automatic control.

磁粉离合器是性能优异的自动控制元件。

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The component, structure and control software of an automatical call-up unit in radio call-up station are introduced to realize the automatic call in manual radio call-up station.

介绍了一种无线寻呼台自动传呼器的组成、结构和控制软件，利用此设备可以在人工寻呼台中简单，方便地实现自动传呼。

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Objective:Investigate the component pattern of detecting points in automatic expo-sure control of abdomen radiography.

目的：探讨腹部摄影自动曝光控制探测点组合选择。

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