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 .
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。
Present paper introduces several electric control devices for squirrel-cage and slip-ring motors with reference to electric control technique of imported belt conveyors.
本文结合消化引进的带式输送机电控技术，介绍笼型和绕线型电动机的几种电控设备。
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