... zero cross point 零交叉点 zero cross signal 零交叉信号 zero cross switch circuit 过零（检查）翻转电路 ...
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A move above zero would be used as a buy sign, while a cross below zero can be used as a sell signal.
向基准线之上的移动被认为是买入信号，向下则为卖出信号。
A format conversion from a non-return-to-zero (NRZ) signal to return-to-zero (RZ) signal is presented based on four-wave mixing (FWM) and cross-phase modulation (XPM) in a silicon optical waveguide.
基于硅光波导的四波混频(FWM)和交叉相位调制(XPM)效应，提出非归零码(NRZ)到归零码(RZ)的光调制格式转换。
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