电-至-电装置的连接 electrical-to-electrical connection
马达与倾角传感器电连接，用以调整激光水平装置的水平状态。
Motor connects to the obliquity sensor to adjust the level state of laser level device.
汇流环作为雷达旋转与固定部分的电连接装置，其可靠性对雷达影响很大，但长期以来一直没有一种有效的预计方法。
Slip ring is an electricity connector of radar rotational part and fixed part , whose reliability influences a lot to radar, but we have not had an effective forecast technique for a longtime .
低压电涌保护装置。第21部分：与电信和信令网络连接的电涌保护装置。性能要求和试验方法。
Low voltage surge protective devices - part 21: surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods.
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