“echo sounder”的概念、定义、翻译、参考文献-科学参考

单词	echo sounder
释义	echo sounder [`ek·ō ´sau̇nd·ǝr] See <<sonic depth finder>>
随便看	open tubular column open universe open valley open water open-web girder open well open-window unit open wire open-wire carrier system open-wire feeder open-wire loop open-wire transmission line open workings opera glasses operand operand-precision register operant conditioning operate time operating angle operating characteristic curve operating delay operating handle operating instructions operating lever operating line

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