An improved method which measures frequency through the slope of zero based on the cross-zero detecting is presented.

因此提出了一种改进的过零检测算法：零点斜率测频法。

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The spectral dispersion of single-mode fiber is measured and the zero chromatic dispersion wavelength, the slope of dispersion vs. wavelength are obtained.

对单模光纤的色散谱进行测量，得出单模光纤的零色散波长和色度色散随波长变化的斜率。

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Thus, in the worst case of zero leading-edge suction, the drag-due-to-lift factor K is simply the inverse of the slope of the life curve (in radians), as previously determined.

因此，零前缘吸力的最坏情况是：由升力引起的阻力系数K是前面确定的升力曲线斜率的倒数（弧度制）。

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Sure, bonds have generated strong returns since then but that is partly because interest rates have been on a steady downward slope to zero, pushing up the value of bonds even as each new crop yields less.

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