Quality square wave power supply, current zero crossing time is short, arc stability, arc without high frequency stability.

优质方波电源，电流过零时间短，电弧稳定，无需高频稳弧。

youdao

The zero-crossing of the wavelet transform of the normal person pulse-wave is found out as a fact that its the wavelet transform coefficients correspond strictly to its time field characteristic.

分析了正常的人脉搏信号的小波域特征，发现脉搏信号的时域特点严格对应于其小波变换的过零点。

youdao

The zero-crossing of the wavelet transform of the normal personpulse-wave is found out as a fact that its wavelet transform coefficientscorrespond strictly to its time field characteristic.

分析了正常人脉搏信号的小波域特征，发现脉搏信号的时域特点严格对应于其小波变换的过零点。

youdao

So, you remember from last time radial nodes are values of r at which the wave function and wave function squared are zero, so the difference is now we're just talking about the angular part of the wave function.

你们记得上次说径向节点在,波函数和波函数的平方,等于零的ｒ的处，现在的区别是我们讨论的是,角向波函数。

麻省理工公开课 - 化学原理课程节选