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；

The results of experimental investigations clearly show that the broad band spectra level of cavitation noise increases as the cavitation number becomes small;

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进而编制出这管线低-高-低17级温度载荷谱。

Furthermore, 17 step temperature load spectrum was compiled for the pipeline.

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本文运用希尔伯特变换空间调制器使十字光栅一级衍射谱的强度分布用于精密定位。

Using a Hilbert transform Modulator, the intensity distribution of first-order spectrum of crossed-slit is used for accuracy positioning in practice.

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