spectral-shift zero-crossing method 频移过零点法
back-emf zero crossing method 反电势过零检测
numerical derivative zero crossing method 数值微分零交点法
zero crossing timing method 过零时间法
zero-crossing timing method 过零时间法
In this paper, combined with the idea of Laser Speckle Velocimetry (LSV), experiments are carried out to measure the velocities of nano-particles in directional nanofluids with Zero-Crossing Method.
本文结合激光散斑测速技术（LSV），应用激光散斑过零法对定向流动的纳米流体中纳米粒子的运动状态进行了理论分析及实验研究。
The results of simulation demonstrate that the precision of correlation method is higher than that of zero crossing method when power system is jammed or has lots of harmonics.
通过仿真表明，当电网信号受到较大干扰或谐波含量较大时，相关法的测量精度比过零检测法高。
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