| 单词 | E and M lead signaling |
| 释义 | E and M lead signaling [¦ē ǝn ¦em `lēd ´sig·nǝl·iŋ] COMMUNICATIONS Communications between a trunk circuit and a separate signaling unit over two leads: an M lead that transmits battery or ground signals to the signaling equipment, and an E lead which receives open or ground signals from the signaling unit. |
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