互谱密度 meaning in English

cross spectral density
cross-spectral density

The estimation of the phase difference of two vibration signals of the same frequency by cross - spectral density
用互谱密度函数估算两同频振动信号的相位差
The results show that the difference of the properties between the two tv towers is great , and the influences of the structural high order modes as well as the structural cross spectral density on the internal force are obviously , so that this effects on structural internal force must be taken into account comprehensively in the aseismic design of tall tv tower
结果表明，洛阳电视塔与东方明珠电视塔的内力演变谱密度特性具有很大的差别，结构的高阶振型及结构的互谱密度对结构的内力具有较大的影响，因此结构的抗震设计应综合考虑这些因素对结构内力的影响效应。