“swivel neck”的概念、定义、翻译、参考文献-科学参考

单词	swivel neck
释义	swivel neck [`swiv·ǝl ´nek] See <<water swivel>>
随便看	echo location echo matching echophrasia echoplex technique echo power echopraxia echo pulse echo ranging echo-ranging sonar echo recognition echo repeater echo signal echosonogram echo sounder echo sounding echo-splitting radar echo suppressor echo talker echouterograph echovirus echylosis eckermannite Eckert number Eckert projection ECL

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