“无回声区”的概念、定义、翻译、参考文献-科学参考

科学参考收录了1248194条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。

单词	无回声区
释义	无回声区 no echo area echoless area
随便看	emission probability emission rate emission regulation emission regulator emission resonance emission security emission source emission spectra emission spectro-chemical analysis emission spectrograph emission spectrographic analysis emission spectrography emission spectrometer emission spectrometric analyzer emission spectrometric method emission spectrometry emission spectrophotometer emission spectroscope emission spectroscopy emission spectrum emission spectrumqa instrument emission standard emission standards for sulfur dioxide emission surface emission test