英语词汇“permanent echo”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	permanent echo
释义	WordReference Random House Unabridged Dictionary of American English © 2024 per′manent ech′o, [Electronics.] Electronicsa radar signal reflected to a radar station on the ground by a building or other fixed object.
随便看	reading reading chair reading desk reading group reading notice reading room read into readjust readjustable readjuster readjustment read-only read-only memory read out read-out readout read-through read up read-write head read/write head ready readying ready-made readymade ready-mix

英语词典包含188688条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。