“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.
随便看	grounding receptacle grounding transformer ground instrumentation ground inversion ground joint ground junction ground layer ground lead ground log ground loop ground lug ground magnetic survey groundman groundmass ground meristem ground mine ground moraine ground noise ground outlet ground plane ground-plane antenna groundplasm ground plate ground plot ground point of intercept

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