| 单词 | electronic distance-measuring equipment |
| 释义 | electronic distance-measuring equipment [i´lek`trän·ik `dis·tǝns ´mezh·ǝ·riŋ i´kwip·mǝnt] NAVIGATION A navigation system consisting of airborne devices that transmit microsecond pulses to special ground beacons, which retransmit the signals to the aircraft; the length of expired time between transmission and reception is measured, converted to kilometers or miles, and presented to the pilot. |
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