“telephone relay”的概念、定义、翻译、参考文献-科学参考

单词	telephone relay
释义	telephone relay [`tel·ǝ´fōn ´rē´lā] ^ELECTRICITY A relay having a multiplicity of contacts on long spring strips mounted parallel to the coil, actuated by a lever arm or other projection of the hinged armature; used chiefly for switching in telephone circuits.
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