“telegraph concentrator”的概念、定义、翻译、参考文献-科学参考

单词	telegraph concentrator
释义	telegraph concentrator [`tel·ǝ´graf `käns·ǝn´trād·ǝr] ^ELECTRICITY Switching arrangement by means of which a number of branch or subscriber lines or station sets may be connected to a lesser number of trunklines, operating positions, or instruments through the medium of manual or automatic switching devices to obtain more efficient use of facilities.
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