1) spatial frequency characteristics
空间频率特性
1.
To achieve image compression with an optical wavelet transform method,we investigated the effects methods of image realization and image capture in an optical 4f system on the spatial frequency characteristics,and studied the characteristics of image energy concentration in the frequency domain of optical 4f system.
为将光学小波变换应用于图像压缩,分析光学4f系统中图像实现方式和图像采集对图像空间频率特性的影响,研究图像频域能量集中特性及其在光学4f系统中的表现,提出光学4f系统中图像空间频率特性的相关计算方法。
2) discontinuous frequency character
间断频率特性
1.
To design the filter with excellent discontinuous frequency character, a novel design algorithm named all phase design technique is presented.
为设计出具有良好的间断频率特性的滤波器,引入了新型的全相位设计法。
3) Time-scale property
时间-频率特性
4) Spatial Frequency Activity(SFA)
空间频率活动性
6) spatial frequency
空间频率
1.
Error-regulating method for magnetorheological finished aspherics focused on spatial frequency;
基于空间频率评价磁流变抛光非球面中频误差
2.
Influence of spatial frequency calibration on OTF test precision;
光学传递函数测试及空间频率标定方法
3.
Qualitative Investigation to Diffraction efficiency Versus Spatial Frequency of Hologram Grating;
全息光栅衍射效率与空间频率的定性研究
补充资料：电力负荷电压及频率特性
电力负荷电压及频率特性
voltage and frequency characteristics of load
d一0 rl}一ft一he dlonyo]一P一nl口texing电力负荷电压及频率特性(voltage andfrequeney eharaeteristies of load)见负荷静态特性及负荷动态特性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条