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单词 slow-acting relay
释义 slow-acting relay
[`slō ¦ak·tiŋ `rē´lā]
ELECTROMAGNETISM
A time-delay relay in which an interval of several seconds may exist between energizing of the coil and pulling up of the armature; the delay can be obtained electrically by placing a solid copper ring on the core of the relay. Also known as slow-operate relay.
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