Noise usually means unwanted sounds which interfere with genuine information.
噪音通常是指干扰真实信息的人们不想要的声音。
With NIR spectra, the analytical information is contained in small spectral variations and usually dominated by the features such as light scattering, background noise and baseline drift.
近红外光谱不但包含着物质成分信息，而且这些信息完全掩盖在众多复杂背景当中（包括光散射、背景噪声以及背景漂移）。
Such cables record reflections with less interference from noise than was usually possible with earlier types.
用这类电缆纪录反射波，干扰噪音比以前应用的各类电缆要小。
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