broad band NMR spectra 宽带核磁共振波谱
The results of experimental investigations clearly show that the broad band spectra level of cavitation noise increases as the cavitation number becomes small;
测量结果表明：在空化形态不变的条件下，空化噪声宽带谱级将随空泡数的减小而单调增加；
Filter is used to transmit spectrum of definitive broad band in the continuous spectrum or to extract certain radiation in the line-spectra.
光学滤光片在连续的光谱中用于透过一定宽度的光谱带或在线状光谱中提取某些辐射。
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