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[电气] 关于马达的，这句话什么意思？

发表于 2010-2-1 12:51 | 显示全部楼层 |阅读模式来自：中国上海

Motor controllers having float, vacuum, pressure, etc., pilot operating devices shall have provisions for hand off automatic (HOA) and continuous operating in the event of failure of these switches.

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