英语词汇echo sounder怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	echo sounder
释义	echo soundern. a sounding apparatus for determining the depth of the sea beneath a ship by measuring the time taken for an echo to be received 声呐；回波探测仪 □ echo-sounding n. (often 常作 attrib.)
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