“zero level”的概念、定义、翻译、参考文献-科学参考

单词	zero level
释义	zero level [`zir·ō ´lev·ǝl] ^{ENGINEERING ACOUSTICS} Reference level used for comparing sound or signal intensities; in audio-frequency work, a power of 0.006 watt is generally used as zero level; in sound, the threshold of hearing is generally assumed as the zero level.
随便看	excitation excitation anode excitation curve excitation energy excitation function excitation index excitation loss excitation potential excitation purity excitation spectrum excitation voltage excitation volume excited state excited-state effect excited-state maser exciter exciter lamp exciter response exciting current exciting line exciton excitron exclusion area exclusion principle exclusive-NOR gate

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